Key management techniques before and after banana bunch emergence
How to manage bananas before and after bunch emergence? Please provide an introduction to the management methods. Management before and after banana bunch emergence can follow these methods: 1. Fertilize in time. When bananas enter the flower bud differentiation stage, this is the key period that determines the number of fruit hands and the number of fingers, and a heavy fertilizer application should be added in time. That is, when the banana leaves produce opposite leaves,...
How to manage bananas before and after bunch emergence? Please provide an introduction to the management methods
Management before and after banana bunch emergence can follow these methods:
1. Fertilize in time.
When bananas enter the flower bud differentiation stage, this is the key period that determines the number of fruit hands and the number of fingers, and a heavy fertilizer application should be added in time. That is, when the banana leaves produce opposite leaves, apply 30-40 kg of farmyard manure, 3-5 kg of manure fertilizer, 0.3 kg of peanut bran, or 0.2-0.3 kg of compound fertilizer per plant, loosen the soil lightly, then spread it evenly on the bed surface, and cover with a thin layer of soil after application. Before banana bunch emergence, apply a pre-flowering fertilizer once, with 50 g of urea and 50 g of potassium chloride per plant, or 200 g of compound fertilizer, or 250 g of decomposed peanut bran diluted with water for drenching. After bunch emergence, when the banana bunch is cut, apply another 150 g of compound fertilizer per plant, combined with farmyard manure water for drenching. In addition, carry out foliar topdressing once every 10-15 days, using 1000 times rare earth multi-element foliar fertilizer or 0.2% potassium dihydrogen phosphate for spraying, to delay premature leaf senescence and promote young fruit development.
2. Cut the bunch in time.
Continue to remove suckers that are not retained, concentrating nutrients to supply banana bunch emergence. When the flower bud appears, pay attention to checking the banana plants, moving aside leaves that block the banana bunch from hanging naturally, to prevent deformed fruit hands or banana leaves scratching the fruit surface and affecting appearance. About 10 days after bunch emergence, when the banana bud has produced the last hand with fewer than 5-8 female flowers, choose a sunny noon on the next hand to cut the bunch. After cutting the bunch, wait until the sap at the wound of the banana axis stops overflowing, then apply 400 times carbendazim or miebingwei solution to brush the wound to prevent bacterial infection.
3. Irrigate reasonably.
During banana bunch emergence, the water requirement is more strict; the soil is required to be moist, but overly wet soil is also feared. On rainy days, avoid water accumulation in the furrows to prevent root rot. In drought, maintain a shallow water layer in the furrows to facilitate watering in the morning and evening and meet the water needs of the plants and fruits. In typhoon-prone seasons, set up banana stakes in time, dig ditch mud to bank up plants with exposed heads and roots, and enhance wind resistance.
4. Prevent and control pests and diseases.
After banana bunch emergence, because the tree body consumes too many nutrients, the plant's disease resistance weakens, and leaf spot disease becomes increasingly serious. If the disease is not controlled well, and the number of green leaves falls below 8, it will affect the yield and quality of banana fruit. In severely affected banana orchards, promptly cut off diseased leaves and withered and residual pseudostems, burn them in a centralized manner, then alternately rotate fungicides such as 1200 times dilishuotuo, or 1000 times bipuer, or 400 times miebingwei, spraying once every 15 days for 3-4 consecutive sprays. If it rains, promptly respray to protect the wounds. If skipper butterflies or aphids are found causing damage, spray insecticides such as deltamethrin or fenpropathrin to kill them.
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