First, select the appropriate variety In order to prevent the occurrence of pre-convulsions in spring cabbage, selection of strong anti-seizure varieties of winter is the key to successful cultivation. At present, the more suitable varieties are "Spring and Summer King", "Yang Chun", "Japanese Spring General" and other varieties.
Second, the application of base fertilizer fine soil preparation of Chinese cabbage plots, the best deep plowing before the winter sun, after the spring soil thawing after the implementation of good quality ring fertilizer 5000 kg per mu, after plowing plough flat do, 1 to 1.2 meters wide , about 20 meters long is appropriate.
Third, timely sowing is generally broadcast in late March to early April. If soil moisture is not good in early spring, water can be made 7-10 days before planting. When sowing, each 2-3 kinds of row, that is, spacing 40-50cm, hole spacing 35-40cm, every 5-6 seeds per hole, 75-100g per acre seed, cover film after sowing, increase ground temperature, To Miao Qi Miao whole.
Fourth, and time seedlings, planting a reasonable dense planting seedlings 4 to 6 days, after the emergence of membrane seedlings in a timely manner, so that the cotyledon exposed plastic film, and the use of clods to compact membrane holes to prevent burning seedlings. After the seedlings were broken, three to four true leaves were planted once and five to six true leaves were planted.
Fifth, fertilizer and water management Spring cabbage should be promoted in the end, strengthen fertilizer management, timely cultivator, and promote root development. It requires pouring water once every 5 days. During the lotus stage, 20 kg of urea is recovered per mu, 20 kg of potassium sulfate or 25 kg of compound fertilizer per mu.
Sixth, timely prevention of pests and diseases, appropriate early harvest cabbage main disease is downy mildew, seedlings pay attention to spraying antivirals, carbendazim. At the same time in the middle and late attention to spray 1000 times Dimethoate, 1000-1500 times phoxim against aphids, cabbage caterpillars and so on. In the middle and late May of the year, the ball of spring cabbage will reach 7-8 percent, which should be harvested in due course. Because the temperature is already high during this period, it is easy to catch convulsions when the harvest is too late. At the same time, the leaf ball that is too tight may be rotted when it encounters high temperatures or rain.
Second, the application of base fertilizer fine soil preparation of Chinese cabbage plots, the best deep plowing before the winter sun, after the spring soil thawing after the implementation of good quality ring fertilizer 5000 kg per mu, after plowing plough flat do, 1 to 1.2 meters wide , about 20 meters long is appropriate.
Third, timely sowing is generally broadcast in late March to early April. If soil moisture is not good in early spring, water can be made 7-10 days before planting. When sowing, each 2-3 kinds of row, that is, spacing 40-50cm, hole spacing 35-40cm, every 5-6 seeds per hole, 75-100g per acre seed, cover film after sowing, increase ground temperature, To Miao Qi Miao whole.
Fourth, and time seedlings, planting a reasonable dense planting seedlings 4 to 6 days, after the emergence of membrane seedlings in a timely manner, so that the cotyledon exposed plastic film, and the use of clods to compact membrane holes to prevent burning seedlings. After the seedlings were broken, three to four true leaves were planted once and five to six true leaves were planted.
Fifth, fertilizer and water management Spring cabbage should be promoted in the end, strengthen fertilizer management, timely cultivator, and promote root development. It requires pouring water once every 5 days. During the lotus stage, 20 kg of urea is recovered per mu, 20 kg of potassium sulfate or 25 kg of compound fertilizer per mu.
Sixth, timely prevention of pests and diseases, appropriate early harvest cabbage main disease is downy mildew, seedlings pay attention to spraying antivirals, carbendazim. At the same time in the middle and late attention to spray 1000 times Dimethoate, 1000-1500 times phoxim against aphids, cabbage caterpillars and so on. In the middle and late May of the year, the ball of spring cabbage will reach 7-8 percent, which should be harvested in due course. Because the temperature is already high during this period, it is easy to catch convulsions when the harvest is too late. At the same time, the leaf ball that is too tight may be rotted when it encounters high temperatures or rain.