Banana test-tube seedlings usually have the advantages of no pests and diseases, uniform growth, and easy transportation, which are conducive to the promotion of large-scale seed varieties. The key points of high-quality and high-yield cultivation techniques are described as follows:
First, soil preparation and earthing test tube seedlings are easy to get out of the head, but it is not suitable for deep seeding. It is better to leave sufficient soil for soil after cultivation. The Shuitian Tea Garden is suitable for use with the 3 level sorghum method, which is slightly higher than the 10 to 15 cm line in the planting hole. As the test-tube seedling grows, the soil in the cocoon will be planted in the planting hole to prevent the outcrop. During the field preparation, the ditch can be shallow for a short time. Afterwards, digging deep ditch and digging the soil to the plants.
Second, planting plantlets 6 to 8 leaves can be planted, the general spring planting is good. Spring planting should be warm and weatherless, and summer and autumn planting should be planted in the afternoon. In winter, the banana area, which is often chilled, is now also used in winter planting or spring planting. Before planting, plant the seedlings in advance to allow the seedlings to adapt to the natural climate. Be careful when opening the seedling bags when planting. Do not loosen the bag soil, otherwise it will affect the survival rate and restore growth.
Third, the fertilization test tube seedlings are not very fertile at the beginning, and the basal fertilizer must be applied deeply so that the root system cannot touch the loam. In particular, the farmyard fertilizer should be cooked and applied deep below 30 cm or 60 to 80 cm outside the planting seedlings. After raining, plant new leaves and then top-dressing. Within two months after planting, dry days can be leaching with 0.1% to 0.2% compound fertilizer or potassium dihydrogen phosphate solution, and 1 to 2 kilograms per fertilizer solution. Diluted manure can also be used. On rainy days, about 1.0 grams of urea or compound fertilizer can be sprinkled 15 to 20 cm away from the seedlings. Fertilize 1 time every 7-10 days, and conditions can be used to spray vegetative fertilizers such as potassium dihydrogen phosphate, organic fertilizer solution, foliar, and Green Wang series fertilizer. The amount of medium-term fertilization should be large, 15 to 20 days 1 time, late 25 to 30 days 1 time. Spring planting seedlings must be strengthened with fertilizer and water management in order to catch the buds in winter.
IV. Water Management Tube seedlings require less water in the initial stage, but they must not be arid and leave water in the soil. Drought should be timely watering, planting in the high temperature period can be covered with the planting hole, the rainy season must pay attention to soil drainage, sticky soil can be planted hole 30 to 40 cm outside the soil, so that the planting hole raised 5 ~ 10 cm, to prevent stagnation and rot or root damage.
Fifth, to strengthen the pest control test tube seedlings are vulnerable to Spodoptera larvae and other pests bite, should pay attention to prevention and treatment. During the rainy season, some old banana areas are more prone to leaf spot disease due to the leaves of the test-tube seedlings that are closer to the ground. Attention should be paid to the control of spraying.
VI. Timely removal of variants at the nursery stage Variants such as leaf white stripe, mosaic, malformed leaves, Qiaohua seedlings, and extra-dwarf strong seedlings are easier to recognize and remove, in addition there are two variants that are more variable and initially difficult to identify. Variants, usually 2 to 4 months after colonization, 15 to 20 leaves above the age can be carefully recognized. One is a dwarf type, with short, thick plants, short, broad and thick leaves, dark green, slightly revolute down, short petiole, close to pseudo-stem, and pseudo-stem thicker and dwarf. The other is mosaic leaf variation, the main symptom is that the leaves are upright, the leaf margins are shrunk in whole or in part, the leaves have irregular or wavy black or waxy spots, and some plants have abnormal phyllotaxis. The above two major mutant strains can be budded and fruited, but the yield is extremely low, the quality is poor, and there is no economic value. It is necessary to find and excavate as soon as possible and replant early.
Seventh, the buds planted in vitro are planted and sucked earlier, and the quantity is more and less. Due to the late determination of buds, these early pumping buds should be removed as soon as possible, and can be removed with a special sharp eschar or sickle when the buds are 15 to 30 cm long. Buds can also be removed by bud cutting and bud removal.
First, soil preparation and earthing test tube seedlings are easy to get out of the head, but it is not suitable for deep seeding. It is better to leave sufficient soil for soil after cultivation. The Shuitian Tea Garden is suitable for use with the 3 level sorghum method, which is slightly higher than the 10 to 15 cm line in the planting hole. As the test-tube seedling grows, the soil in the cocoon will be planted in the planting hole to prevent the outcrop. During the field preparation, the ditch can be shallow for a short time. Afterwards, digging deep ditch and digging the soil to the plants.
Second, planting plantlets 6 to 8 leaves can be planted, the general spring planting is good. Spring planting should be warm and weatherless, and summer and autumn planting should be planted in the afternoon. In winter, the banana area, which is often chilled, is now also used in winter planting or spring planting. Before planting, plant the seedlings in advance to allow the seedlings to adapt to the natural climate. Be careful when opening the seedling bags when planting. Do not loosen the bag soil, otherwise it will affect the survival rate and restore growth.
Third, the fertilization test tube seedlings are not very fertile at the beginning, and the basal fertilizer must be applied deeply so that the root system cannot touch the loam. In particular, the farmyard fertilizer should be cooked and applied deep below 30 cm or 60 to 80 cm outside the planting seedlings. After raining, plant new leaves and then top-dressing. Within two months after planting, dry days can be leaching with 0.1% to 0.2% compound fertilizer or potassium dihydrogen phosphate solution, and 1 to 2 kilograms per fertilizer solution. Diluted manure can also be used. On rainy days, about 1.0 grams of urea or compound fertilizer can be sprinkled 15 to 20 cm away from the seedlings. Fertilize 1 time every 7-10 days, and conditions can be used to spray vegetative fertilizers such as potassium dihydrogen phosphate, organic fertilizer solution, foliar, and Green Wang series fertilizer. The amount of medium-term fertilization should be large, 15 to 20 days 1 time, late 25 to 30 days 1 time. Spring planting seedlings must be strengthened with fertilizer and water management in order to catch the buds in winter.
IV. Water Management Tube seedlings require less water in the initial stage, but they must not be arid and leave water in the soil. Drought should be timely watering, planting in the high temperature period can be covered with the planting hole, the rainy season must pay attention to soil drainage, sticky soil can be planted hole 30 to 40 cm outside the soil, so that the planting hole raised 5 ~ 10 cm, to prevent stagnation and rot or root damage.
Fifth, to strengthen the pest control test tube seedlings are vulnerable to Spodoptera larvae and other pests bite, should pay attention to prevention and treatment. During the rainy season, some old banana areas are more prone to leaf spot disease due to the leaves of the test-tube seedlings that are closer to the ground. Attention should be paid to the control of spraying.
VI. Timely removal of variants at the nursery stage Variants such as leaf white stripe, mosaic, malformed leaves, Qiaohua seedlings, and extra-dwarf strong seedlings are easier to recognize and remove, in addition there are two variants that are more variable and initially difficult to identify. Variants, usually 2 to 4 months after colonization, 15 to 20 leaves above the age can be carefully recognized. One is a dwarf type, with short, thick plants, short, broad and thick leaves, dark green, slightly revolute down, short petiole, close to pseudo-stem, and pseudo-stem thicker and dwarf. The other is mosaic leaf variation, the main symptom is that the leaves are upright, the leaf margins are shrunk in whole or in part, the leaves have irregular or wavy black or waxy spots, and some plants have abnormal phyllotaxis. The above two major mutant strains can be budded and fruited, but the yield is extremely low, the quality is poor, and there is no economic value. It is necessary to find and excavate as soon as possible and replant early.
Seventh, the buds planted in vitro are planted and sucked earlier, and the quantity is more and less. Due to the late determination of buds, these early pumping buds should be removed as soon as possible, and can be removed with a special sharp eschar or sickle when the buds are 15 to 30 cm long. Buds can also be removed by bud cutting and bud removal.
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