Plant growth regulator considerations

A. Strengthen fertilizer and water management.

1. Reasonable fertilization. Mainly based on organic fertilizer, supplemented by chemical fertilizer; heavy application of base fertilizer, appropriate amount of topdressing; focus on the application of nitrogen, phosphorus, potassium fertilizer and the use of micro-fertilizer; no fruit-sensitive fertilizer, regulate growth.

2. Scientific management of water. The period of maintaining the fruit and improving the fruit setting rate is when the water demand of the fruit tree is high. If the soil is short of water, it should be watered in time, and combined with fertilization. Do not pour water at noon on hot days, and should be done in the evening or in the morning.

B. Strengthen tree management.

1. Thinning flowers and thin fruit. Fruit trees with too much flower and fruit are thinned and thinned, and the amount of flowers and fruits should be determined according to the specific tree potential, and the fruits, deformed fruits and overly dense fruits should be removed.

2. Pressure control summer shoots. The fruit can be used to control the rapid growth of summer shoots by water spray or adopting new shoots to promote reproductive growth and increase production and income.

3. Reasonable pruning. Pruning can reduce shading and enhance photosynthesis. It is usually combined after fruit picking or thinning and thinning, cutting off weak branches, dead branches, cross branches, diseased branches, short and strong branches to reach expanded fruits. the goal of.

C. Strengthen pest control.

1. Seize the prevention period. According to the law of occurrence and development of pests and diseases, seize the timely use of drugs in key periods of prevention and control to reduce pests and diseases.

2. Rational use of pesticides. The first is to choose low-toxic and high-efficiency pollution-free pesticides; the second is to prepare the concentration according to the instructions for pesticide use, and the concentration should not be too large; the third is to pay attention to the prevention and treatment methods, and the insecticide should not be applied during the flowering period, and the spraying should not be carried out in rainy or high temperature. Fruit tree sensitive pesticides.