Precautions for plant growth regulators

1. Strengthen fertilizer and water management
① Rational fertilization. Organic fertilizer is the main fertilizer, chemical fertilizer is the auxiliary fertilizer; heavy base fertilizer, appropriate topdressing; focus on the coordinated application of nitrogen, phosphorus and potassium fertilizers and pay attention to the use of micro-fertilizers; do not apply fertilizers that fruit trees are sensitive to, and regulate growth.
② Scientific water management. The period of flower and fruit preservation and fruit setting rate improvement is when fruit trees need more water. If the soil is short of water, water should be irrigated in time, which can be combined with fertilization. Do not irrigate in the hot sun at noon, but in the evening or morning.
2. Strengthen tree vigor management
① Thinning flowers and fruits. Thinning flowers and fruits for fruit trees with too many flowers and fruits. The amount of flowers and fruits to be thinned should be determined according to the specific tree vigor, and diseased and insect-infested fruits, deformed fruits and overcrowded fruits should be thinned out.
② Pressure control of summer shoots. You can use Guobao to spray water or take the method of pinching the new shoots to control the rapid growth of summer shoots, promote reproductive growth, and achieve increased production and income.
③ Reasonable pruning. Pruning can reduce shade and enhance photosynthesis. It is usually carried out after fruit picking or when thinning flowers and fruits. Weak branches, dead branches, cross branches, diseased and insect-infested branches are cut off, and branches that grow too strong are shortened to achieve the purpose of expanding fruits.
3. Strengthen pest control
① Seize the prevention and control period. According to the occurrence and development of pests and diseases, seize the key period of prevention and control to use pesticides in time to reduce pest damage.
② Reasonable use of pesticides. First, choose low-toxic, high-efficiency and pollution-free pesticides; second, prepare the concentration according to the instructions for use of pesticides, and the concentration should not be too high; third, pay attention to prevention and control methods, do not apply pesticides during the flowering period, spraying should not be carried out on rainy days or high temperatures, and do not apply pesticides that fruit trees are sensitive to.