Notes for plant growth regulators

1. Strengthen fertilizer and water management.

(1) Reasonable fertilization. With organic fertilizer as the main, fertilizer as auxiliary; Apply base fertilizer heavily and top fertilizer appropriately; Pay attention to the combined application of nitrogen, phosphorus and potash fertilizer and pay attention to the use of micro fertilizer; Do not apply fruit sensitive fertilizer to regulate growth.

(2) Scientific management of water. The period of preserving flowers and preserving fruits and increasing fruit setting rate is the time when the fruit trees need more water, if the soil is short of water, irrigation should be carried out in time, which can be combined with fertilization. Irrigation should not be carried out under the hot sun at noon, should be carried out in the evening or in the morning.

2. Strengthen tree potential management.

(1) Thin flowers and thin fruit. For fruit trees with too much fruit and fruit, the amount of fruit and fruit should be determined according to the specific tree potential.

(2) Pressure control summer shoot. Can use fruit treasure to water spray or take new shoot to pick the way to control the rapid growth of summer shoot, promote reproductive growth, to increase production and income.

(3) Reasonable pruning. Pruning can reduce shade and enhance photosynthesis. Generally, pruning can be carried out in combination after fruit picking or when fruit thinning and thinning. Weak branches, dead branches, cross branches, insect and disease branches can be cut off and the branches that grow too strong can be shortened to expand the fruit.

3. Strengthen the prevention and control of diseases and insects.

(1) Seize the prevention period. According to the law of occurrence and development of diseases and insect pests, seize the key period of prevention and control timely drug control, reduce the harm of diseases and insects.

(2) Rational use of pesticides. One is to choose low toxicity and high efficiency pollution-free pesticides; Secondly, the concentration of pesticide prepared according to the instructions should not be too high; The third is to pay attention to the prevention and control methods, do not apply pesticides in the flowering period, spray should not be carried out in rainy days or high temperature, do not apply fruit sensitive pesticides.