The principle of organic vegetable rotation and the prevention of "soil disease"

First, the concept of crop rotation and the principle of prevention and control of pests and diseases Rotation refers to the planned rotation of crops of different types on the same plot and the different types of multiple cropping forms known as crop rotation. Planting a crop or a multiple cropping plant on the same land for a long period of consecutive years is called continuous cropping, also known as heavy cropping; Continuous cropping often causes a reduction in production, which can easily lead to a “soil disease” phenomenon. This is because: 1. Each crop has some special pests and weeds. Continuous cropping can make these pests and weeds cycle in a vicious cycle of infection: such as cucumber downy mildew, root rot, sphagnum; tomato virus disease, late blight; pepper blight, blight and so on. 2. The types, quantities, and proportions of nutrients in soils absorbed by different crops are different, and the ability of roots to absorb water and fertilizers is also different. The long-term cultivation of a crop, because its roots always stay at the same level, the crop after absorbing a lot of special nutrients, it will cause the loss of soil nutrients, so that the soil nutrients are out of balance. For example, cereal crops absorb more nitrogen, phosphorus, and silicon and absorb less calcium, while legume crops absorb more calcium, phosphorus, and nitrogen, and less absorb silicon, but due to root nodule nitrogen fixation and roots and leaves There are many residues. After planting leguminous crops, soil nitrogen content is relatively poor, soil is loose; leafy vegetables, cruciferous vegetable crops, their roots secrete organic acids, can dissolve and absorb the insoluble phosphate in the soil. , has the function of enriching soil phosphorus, but most of the crops are difficult to absorb the phosphorus fixed in the soil. 3, different crop root secretions are different, some secretions have toxic effects, such as soybean roots secrete more amino acids, so that the increase of soil bacteriophage, their secretion of phage also increased, thus affecting the formation of nodules and nitrogen fixation ability This is also an important reason for the decline in soybean production. In addition to high fertility and high fertility requirements, high-yielding root exudates can inhibit the growth of other crops such as wheat, so for most crops, high-yielding stubble is not good. 4. Continuous cropping due to farming, fertilization, irrigation, etc., will result in deterioration of soil physical and chemical properties, reduced fertility, accumulation of toxic substances, slow decomposition of organic matter, and reduction of beneficial microorganisms and numbers. Therefore, in the process of conversion to organic agriculture, crop rotation is the first problem to be solved. Only by solving the problem of crop rotation can we get rid of the agricultural chemicals that are heavily dependent on modern agriculture and realize the production of organic agriculture. Therefore, crop rotation is the most basic requirement for organic cultivation. And one of the features. Whether soil fertility or pest control requires crop rotation. This is because: (1) Crop rotation can balance the use of nutrients in soil and combine land use with land conservation; (2) It can change farmland ecological conditions, improve soil physical and chemical properties, and increase biodiversity; (3) Exemption and reduction Diseases and diseases of certain continuous cropping plants. The use of fungicides secreted from the roots of the former crop can inhibit the occurrence of diseases on the crops. Root exudates such as sugar beets, carrots, onions and garlic can inhibit the occurrence of potato late blight. The secretion of wheat roots can inhibit the growth of thatch. (4) Reasonable crop rotation, due to the deterioration of food conditions and the reduction of host population, caused a large number of insects with strong parasitic, single plant species, and low migration ability. Pathogens with less saprophytic pathogens such as Phytophthora infestans cannot continue to reproduce because they do not have host plants. (5) Rotation can promote the activity of microorganisms that have antagonistic effects on pathogens in the soil, thus inhibiting the growth of pathogens. Second, the basic principles of vegetable rotation from the point of view of plant protection: to consider the host range of pathogens, and then consider which crop rotation, such as yellow wilt Verticillium host a wider range, cotton and solanaceous plants such as potatoes, eggplant rotation Diseases will get heavier and heavier because they are the hosts of Verticillium. Secondly, we must consider the number of years of crop rotation. Different pests and diseases will have different time to live in the soil of crops, and the duration of rotation will also be different. 1. Choose fewer pests and diseases, and you can rotate crops with or without pesticides. (1) Vegetables that do not require pesticides Dioscorea: yam, Japanese yam, taro; Amaranthaceae: spinach, sugar beet, Suaeda; Umbelliferae: carrots, cress, parsley, celery, fennel, coriander, etc.; Asteraceae: Burdock, lettuce, garland chrysanthemum; Labiatae: Perilla, mint; Ginger family: Ginger; Convolvulaceae: sweet potato; Liliaceae: leeks, garlic, green onions, onions, cypress, cypress, lily and so on. 2. Use the local climatic conditions or seasonal differences to select vegetables that have fewer pests and diseases to rotate. Such as legumes: peas, beans, beans, peanuts, soybeans, beans, kidney beans, lentils, beans; cruciferous: cabbage, cabbage, radish, indigo, mustard, rape. These vegetables have fewer pests and diseases, and normal growth areas or seasons can be solved with only a small amount of pesticides. However, if you choose cold regions, high altitude areas, or spring and winter cold seasons, you can produce high-quality organic vegetables without using pesticides. 3, the evaluation of crop mouthwash characteristics. The mouth rinsing characteristic refers to the physical and chemical properties of the soil after planting a certain crop, which is reflected in the influence of the post crop. It is the crystallization of the biological characteristics of crops and the technical effects of farming techniques on the soil and crops. Because of the different nature of cornices, it has direct effects to varying degrees. Or indirectly affect the growth and development of post-stem effect and the level of yield. Therefore, grasping the cornice characteristics of various types of crops is the basis for a successful crop rotation plan. (1) Leguminous crops include edible legume crops, leguminous fodder, and green manure, which are biological nitrogen fixation crops. The amount of nitrogen per acre of soybean is 5-10 kilograms, 3.5 to 9.5 kilograms of broad beans, 3.7 kilograms of adzuki beans, 3 to 6 kilograms of kidney beans, Mung beans 5-7.5 kilograms, peas 5-5.5 kilograms, kidney beans 5-15 kilograms. Rhizobium nitrogen fixation can provide 50%-75% of the total nitrogen needed by legumes for a lifetime. Applying sufficient organic fertilizer in the early stage can fully meet the demand for nitrogen for legumes in their lifetime. The root crops and shedding of legumes are more, the soil is loose, and the soil has high nitrogen content. It is a good frontier for leafy vegetables and fruit and vegetables. Legume green manure grass contains about 0.5% nitrogen, phosphorus content is 0.07%-0.15%, and potassium content is 0.15%-0.98%. It can be used as vegetable (bud of young plant) and can also be used as feed. It can be used directly as fertilizer. It is a pioneer crop for fertilizing fertility and it can be interplanted with other vegetables that need more fertilizer. (2) The roots and tuber crops are most likely to not be contiguous, and there are more pests and diseases after continuous cropping. However, most of these crops are ridged, and they loosen the soil. After the planing, they can loosen and ripen the soil. This is a good frontier for many vegetables. 4. Classify vegetables and choose different types for each meal. Such as: vegetables can be divided into leafy vegetables, melons, fruit vegetables, root vegetables and beans. Can be: lettuce - cucumber; beans - white radish - tomato soup and so on. 5, deep-rooted and shallow-rooted planting, absorb nutrients in different depths of soil, such as tomato - cabbage pods. 6, need to be hypertrophic and need to plant fertilizers alternately, such as: broccoli and green beans. 7. The rotation of vegetables with high land coverage and low coverage can protect the soil structure. 8. The following crops should not be rotated or intercropped. a. Vegetables that belong to the same family taxonomically should not be rotated, such as tomatoes, eggplants, peppers, bell peppers, etc. b. Cabbage, cabbage, cauliflower, broccoli, white radish, cherry radish, and leeks c. onions, green onions, leeks, and garlic. d. Carrots and celery. e. Various melons. Third, the characteristics of common vegetables crop rotation cucumber: spring cucumber before the pod is mostly autumn or spring dishes and overwintering dishes, after the pods suitable for a variety of autumn vegetables, summer and autumn cucumber oysters suitable for a variety of spring and summer dishes, quail for winter vegetables or spring dishes. Cucumber and tomato inhibit each other and should not be cropped and interplanted. Tomatoes: 3-5 year crop rotation, not in conjunction with solanaceous crops. The former crop is a variety of leafy vegetables and root vegetables. The latter can also be leafy vegetables and root vegetables, and between short stalk crops or vegetables, intercropping, such as soybeans, cabbage, Bulbous fennel, onion, garlic and other intercropping. Fall shed tomato, nesting dishes can reduce the temperature. Interplanting sweet corn in tomato can attract moths to lay eggs and eliminate them collectively. Eggplant: The former is wintering leafy vegetables, and can also be interplanted with early growing cabbage, early-maturing cabbage, spring radish, water radish, cherry radish and other short-growing vegetables. After the pod can be planted cabbage and other autumn vegetables. Pepper: It is not suitable for continuous cropping with solanaceous crops, intercropping with leafy vegetables, root vegetables, peanuts and other short stalk crops. Melon: Avoid continuous cropping. For three to five years, avoid contact with other melons or old vegetable gardens. Melon leaves and leaves the best for the front and rear, the rear leaves and vegetables can significantly increase production. Beans: Beans, peas, peas, sweet beans, rack beans, etc. should not be used for continuous cropping. Continuous cropping for more than 3 years, the former crop is autumn and winter vegetables or unused land, and open crops, rice, corn, peanuts, and other food crops can be used as fore crops. . The southern spring eel is spring radish, spinach and other spring vegetables, and the latter vegetable is mainly wintering spinach, celery, Chinese cabbage, and autumn cabbage. In the south, there are autumn potatoes, radish cabbage, black cabbage, kale and Chinese cabbage. In the north, it is particularly suitable for intercropping with high stalk crops. Radish: autumn and winter radish gargle more than melons, solanaceous fruit, beans is appropriate, early spring radish is spinach, celery, cabbage, autumn lettuce and carrots; seasons radish can be set apart with pumpkins. Autumn and winter carrots: Former crops are mostly wheat, spring cabbage, spring cabbage, and beans. After the crop can be inoculated wheat, onion, spring cabbage, green onions, potatoes and so on. Spring sowing carrots: The former were mostly autumn cabbage, green onion, winter cabbage, spinach, and most of the later vegetables were cabbage, cabbage, celery, spinach, autumn green beans, and autumn cucumbers. Phthalocyanine: Formerly melons, legumes, jackfruits, and potatoes, two to three years of rotation, not linked to other cruciferous vegetables. Potatoes: Former crops are onions and cucumbers, followed by cereals and soybeans. Solanaceae crops should not be rotated between each other. It is also not appropriate to rotate with root vegetables. When interplanting with other crops, attention should be paid to: (1) Precocious and short-planted varieties should be selected. (2) The symbiosis period should be shortened as soon as possible, and the product organs should be staggered during the peak period. (3) Less competition for temperature, light, water, fertilizer, and impact management. Spring 茬: for spinach, cabbage, carrots. Dioscorea: Intercropping with leafy vegetables, cabbages, wheat, and beans in the spring, solanaceous fruits and melons and vegetables in the summer, cold-resistant vegetables in the fall, and rotation for 2-3 years. Welsh onion: The most bogey continuous crop. It takes more than three years to turn crops into rotations with food crops to cultivate Chinese cabbage and melon vegetables using green onions. Before the growth of green onions early radish species, late interplanting spinach and other overwintering crops. Onion: It is a good fore crop of autumn fruits and vegetables. It is intercropped with tomatoes, melons and other melons and fruits, or interplanted lettuce, radishes, dwarf cowpeas, bulb anise, eggplant and other vegetables. Garlic: Most avoid continuous cropping, or with other Allium plants. The seeds of autumn sowing garlic are best for the early-maturing kidney beans, melons, solanes, and potatoes; the spring sowing of garlic is best for autumn beans, melons, pumpkins and eggplants; it is a good forerunner of other crops. Cabbage: Rotating with rice; not suitable for continuous cropping and rotation with other cruciferous crops. In the rotation: (1) choose the vegetables that harvested earlier, such as solanaceous fruit; (2) choose vegetables that are more fertilized before the election, such as cucumbers and watermelons; (3) onions and garlic as the former, can reduce pests and diseases. Cabbage was planted on the leeks or in the garlic ridge, and the disease was significantly reduced. Cabbage and Chinese cabbage: It can be rotated with melons, beans, root vegetables and field crops. Spring vegetables can be interplanted with solanes, beans, melons, and yams. Summer and autumn vegetables can be mixed with celery, garland chrysanthemum and carrots. Autumn early autumn cabbage can be interplanted with cauliflower, cabbage, and autumn potatoes. Winter and spring cabbage, lettuce and other intercropping. Cabbage: Precursor melons, beans, avoid continuous cropping. The open field can be intercropped with high stalk crops such as corn. It can be intercropped with tomatoes, cucumbers, rack beans and other elevated vegetables. Chives: Soybeans, melons, beans, early maturing vegetables (house or greenhouse) intercropping. Leek: autumn sowing leek is the best for tomato, cucumber. Before the spring oyster dishes are garlic, avoid continuous cropping. Melon: Melon strains of 5 to 6 strains of wax gourd were planted on one side of the pot, and the other on the head. After April and May, the leeks in the leek were interplanted with wax gourd or pepper, eggplant interplanting wax gourd, tomato interplanting wax gourd, and melon under interplanting bulbs, fennel, lettuce, cabbage, and leafy vegetables. In the mountains, wax gourd was interplanted with ginger. Lotus root: glutinous rice and rice rotation. After harvesting, it can be planted with watercress, arrowhead mushrooms, alfalfa and watercress. Lotus roots are often made with alternate mushrooms, oysters, and oysters, or between white and white. Bai Bai: It is not suitable for continuous cropping. It should be used for rice, oyster mushrooms, oysters, buckwheat, barberry, and rice.

    This classification summarizes the Spirulina Tablets produced by our own factory in northwestern of China .     

    We have advanced equipment and strict quality control system to ensure the quality and production.

    Spirulina Tablets Food Grade

    The products under the classification are:

    1. Spirulina Tablets .

    Various parameter specifications of our product:

    Naturland Certified ; CERES certified .
    EU & NOP standard ; Kosher & Halal Available .
    Low heavy metals & Micro Contents , Low & Stable PAH4 Level , 
    PAH4 value is less than 10 ppb .Low microorganismsNon-Irradiation , 
    Non GMO , Gluten Free , Allergen Free , Pesticides Free .
    Own Factory :  Manufacture in northwest of China . Legitimacy , Regularity , Cultural .
    Own Lab : Quality control and Product development . Strictly , Creativity , Responsibility .

    YIJIAN Company

    About Company
    Yanchi County Yijian Biotechnol Co.,Ltd
    was founded in Dec 2012 , 
    by Mr. Dezhi Zhang , 
    the legal representative of the company . 
    Company registered capital is 10 million RMB . 
    The main business sectors are culture , processing , internal sales , import and export trade of Organic Spirulina and Organic Chlorella products . 
    Yijian is known globally as one of the major suppliers of microalgae products across the world . 
    Annual production rate is 600 Mt . 
    Average annual sales income is around 5 million dollar .

Spirulina Tablets

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