Management measures of fertilizer and water for planting bananas in spring

The amount of fertilizer applied to bananas depends on the fertility of the banana soil, the climate characteristics of the planting area, the fertilization method, the variety of bananas, the growth period of bananas, etc. The following are the fertilizer and water management measures for planting bananas in spring:

banana

1. Fertilizer and water management at seedling stage

Banana seedlings (especially tissue culture seedlings) need fertilizer but fear heavy fertilizer, need water but fear soaking. Therefore, keeping moist and applying fertilizer rich in organic matter frequently and thinly are the basic principles of fertilizer and water management in seedling stage.

① rhizosphere topdressing: banana can be sprayed with water and fertilizer about 10 days after planting: 1-2 kg of light manure water or 1-2 kg of 0.2%-0.3% organic compound fertilizer water can be sprayed on each plant (once every 10-15 days, continuously applied 3-5 times); about 2 months after planting, ecological organic compound fertilizer 40-50 kg or ternary compound fertilizer 0.3 kg + bran fertilizer (retting) 0.5 kg can be applied on each plant, and then applied once every 20 days.

(2) Foliar topdressing: spray 3-5 times (every 7 days) with 10 ml of Shengzhifeng liquid fertilizer or pasty organic fertilizer mixed with 15 kg of water (add a little spreading agent or neutral washing powder to the mixed solution) to ensure that banana seedlings grow early and grow vigorously.

2. Mid-term fertilizer and water management

Banana 18-30 leaves, fertilizer requirements increased significantly, but too much fertilizer will hurt the roots. Each banana tree should be applied with 0.4 kg ecological organic compound fertilizer, 0.2 kg potassium chloride or 0.4-0.5 kg multiple compound fertilizer, 0.1 kg potassium chloride and 0.5 kg bran fertilizer every 20 days. When fertilizing, a circular shallow ditch is opened along the banana drip line, and water is sprayed after fertilization, the same below. If you find bananas that grow poorly, you should spray foliar fertilizer rich in organic matter 1-3 times to promote growth. Water management principle: wet and not stain accumulation.

3. Fertilizer and water management in bud stage

Bananas need the most fertilizer in this period (30-40 leaves). Apply urea 0.1-0.2 kg, potassium chloride 0.2 kg, bran fertilizer 0.5-1 kg (or 0.5 kg ecological organic compound fertilizer +0.1 kg potassium chloride) to each banana tree every 20 days. Apply fertilizer after rain or irrigation to keep the soil moist. In case of drought, timely sprinkle and irrigate.

4. Management after bud extraction

The time from bud stage to harvest stage of banana planted in spring happened to be the winter and spring season with low temperature, and the banana root was aging at this time, so the absorption capacity of banana root was very poor. Therefore, one of the key measures to obtain fertilizer and high yield is to apply warm organic quick-acting fertilizer and organic foliar fertilizer. It is suggested to apply 0.1-0.2 kg ecological organic compound fertilizer and 0.1 kg potassium fertilizer to each plant after bud picking for 2-3 times (every 15 days), and spray Shengzhifeng liquid, paste organic fertilizer or Shengduo Su for 3-5 times. Spraying fruit fingers with 2,4-D at bud stage can elongate fruit fingers, but attention should be paid to the concentration and dosage of solution so as not to affect fruit shape and quality of banana.