Test tube seedlings have the advantages of no pests and diseases, uniform growth, ease of transportation, and promotion of large-scale promotion of seed varieties. However, the seedling plants are weak, with poor resistance, and are vulnerable to injury or dead seedlings in bad weather. Therefore, production should pay attention to the following technical key.
First, soil preparation and soil test tube seedlings are easy to outcrop and should not be deep-seed. The water field banana garden is planted with deep-groove sorghum, which is slightly higher than the planting hole row 10 to 15 cm. With the growth of the test-tube plantlet, the soil is planted to the planting hole to prevent the outcrop. When the dry land is set, the ditch can be shallow, and afterwards, dig deep ditch to plant soil.
Second, the planting of planting seedlings with 6 to 8 leaves can be planted, generally with spring planting as well. Before planting, plant the seedlings in advance and carefully open the seedling bags when planting. Do not loosen the soil. Otherwise it will affect the survival rate and restore growth.
Third, fertilizer and water management Tube seedlings are very resistant to fertilizer at the beginning, and the basic fertilizer must be applied deeply. Never let the root system touch the fertilizer. It can be cleared on rainy days, and it will be top-dressed after planting new leaves. 2 months after planting, sunny days can be applied 0.1% ~ 0.2% compound fertilizer or potassium dihydrogen phosphate, can also be applied dilute fecal water, each plant applied 1 ~ 2 kg; rain can be about 10 grams of urea or The compound fertilizer such as the special fertilizer for banana produced by the Soil and Fertilizer Institute of Guangdong Academy of Agricultural Sciences spreads about 15 to 20 cm away from the seedlings and is applied once every 7 to 10 days. The mid-growth period is applied once every 15 to 20 days, and it may be applied 25 to 30 days later. In the initial stage of the growth of the in vitro plantlets, the water requirement is less, but it is not tolerant to drought and waterlogging. It should be sprayed in time when drought occurs, and attention should be paid to drainage in rainy days.
Fourth, timely removal of mutant strains of banana plantlets There are two variant strains, usually 2 to 4 months after planting, 15 to 20 leaves above the time can be carefully recognized. One is dwarfed mutants. Plants are thick, with thicker leaves, darker greens, slightly revolving downwards; petiole short, close to pseudo-stem; pseudo-stems are thicker and dwarfed. The other is an abnormal leaf strain. The leaves are upright, the leaf margins are shrunken in whole or in part, the leaves have irregular or wavy black or waxy traces, and some are accompanied by irregular, transparent patches, and some plant leaf sequences are not normal. The above two mutant strains can be budded and fruited, but the yield is extremely low and the quality is poor. Most of them are of no economic value and must be discovered and excavated as soon as possible and replanted as soon as possible.
Fifth, to strengthen the prevention and control of pests and diseases In the epidemic areas of mosaic heart rot, care should be taken to adopt robust test tube seedlings, remove field weeds in a timely manner, and not spray virus host crops, and regularly spray antiviral agents. Seedlings of test-tubes are also susceptible to pests such as the larvae of Spodoptera litura, and some coastal old banana areas are close to the ground due to the leaves of test-tube seedlings, and they are susceptible to leaf spot disease during the rainy season.
Sixth, the buds of the test-tube seedlings were sucked and sucked earlier, but the quantity was more but weaker. The sucking buds that are drawn early should be promptly removed, and they can usually be removed with a special turmeric or sickle when the buds are 15-30 cm long.
First, soil preparation and soil test tube seedlings are easy to outcrop and should not be deep-seed. The water field banana garden is planted with deep-groove sorghum, which is slightly higher than the planting hole row 10 to 15 cm. With the growth of the test-tube plantlet, the soil is planted to the planting hole to prevent the outcrop. When the dry land is set, the ditch can be shallow, and afterwards, dig deep ditch to plant soil.
Second, the planting of planting seedlings with 6 to 8 leaves can be planted, generally with spring planting as well. Before planting, plant the seedlings in advance and carefully open the seedling bags when planting. Do not loosen the soil. Otherwise it will affect the survival rate and restore growth.
Third, fertilizer and water management Tube seedlings are very resistant to fertilizer at the beginning, and the basic fertilizer must be applied deeply. Never let the root system touch the fertilizer. It can be cleared on rainy days, and it will be top-dressed after planting new leaves. 2 months after planting, sunny days can be applied 0.1% ~ 0.2% compound fertilizer or potassium dihydrogen phosphate, can also be applied dilute fecal water, each plant applied 1 ~ 2 kg; rain can be about 10 grams of urea or The compound fertilizer such as the special fertilizer for banana produced by the Soil and Fertilizer Institute of Guangdong Academy of Agricultural Sciences spreads about 15 to 20 cm away from the seedlings and is applied once every 7 to 10 days. The mid-growth period is applied once every 15 to 20 days, and it may be applied 25 to 30 days later. In the initial stage of the growth of the in vitro plantlets, the water requirement is less, but it is not tolerant to drought and waterlogging. It should be sprayed in time when drought occurs, and attention should be paid to drainage in rainy days.
Fourth, timely removal of mutant strains of banana plantlets There are two variant strains, usually 2 to 4 months after planting, 15 to 20 leaves above the time can be carefully recognized. One is dwarfed mutants. Plants are thick, with thicker leaves, darker greens, slightly revolving downwards; petiole short, close to pseudo-stem; pseudo-stems are thicker and dwarfed. The other is an abnormal leaf strain. The leaves are upright, the leaf margins are shrunken in whole or in part, the leaves have irregular or wavy black or waxy traces, and some are accompanied by irregular, transparent patches, and some plant leaf sequences are not normal. The above two mutant strains can be budded and fruited, but the yield is extremely low and the quality is poor. Most of them are of no economic value and must be discovered and excavated as soon as possible and replanted as soon as possible.
Fifth, to strengthen the prevention and control of pests and diseases In the epidemic areas of mosaic heart rot, care should be taken to adopt robust test tube seedlings, remove field weeds in a timely manner, and not spray virus host crops, and regularly spray antiviral agents. Seedlings of test-tubes are also susceptible to pests such as the larvae of Spodoptera litura, and some coastal old banana areas are close to the ground due to the leaves of test-tube seedlings, and they are susceptible to leaf spot disease during the rainy season.
Sixth, the buds of the test-tube seedlings were sucked and sucked earlier, but the quantity was more but weaker. The sucking buds that are drawn early should be promptly removed, and they can usually be removed with a special turmeric or sickle when the buds are 15-30 cm long.
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