Management of peach trees in spring

The management of peach trees in spring mainly refers to the management of peach trees before sprouting, sprouting, flowering, fruit setting and fruit development. The main technical points are as follows:

1. Fertilization

Peach branches grow rapidly and the fruit development period is short, so fertilization should be timely and reasonable. Spring fertilization mainly refers to fertilization before sprouting, fertilization time should not exceed late February, early application is better. The types of fertilizers are chemical ammonium bicarbonate, phosphate fertilizer, potash fertilizer and organic fertilizer. The peach tree with 35 kilograms and 50 kilograms of fruit was applied 40 kilograms of high-quality mature human and animal manure, 0.25 kilograms of urea, 0.15 kilograms of superphosphate and 0.4 kilograms of potassium chloride. Fertilization method: under the tree crown, close to the root distribution area, dig 2 to 3 fertilizer pits, fully mix organic fertilizer with nitrogen, phosphorus and potassium fertilizer, and cover the soil in time after application. In case of drought and heavy rain before sprouting, light dung water should be applied to resist drought and drainage.

2. Prevention of physiological fruit drop

Physiological fruit drop is an important problem in the growth of peach trees, especially under rainy conditions. The physiological fruit drop of peach trees can be divided into three stages: the first stage occurs after flowering, which is mainly caused by the incomplete development of pistil and flower powder and poor pollination; the second stage is in the young fruit stage, which is mainly caused by the poor nutrition supply of the tree; the third stage is the hard core stage, which is mainly caused by the competition for nutrients and water between the new shoot and the fruit. We should also pay attention to the harm of diseases and insect pests and other factors.

Measures to overcome physiological fruit drop

1. Peach trees with prosperous trees should apply little or no nitrogen fertilizer in spring, and apply more base fertilizer and farm manure in the second half of the year.

two。 The exuberant growth of branches before the hard core period can be controlled by coring, pruning, branch control and other methods.

3. Do a good job of ditching and drainage in Taoyuan in the rainy season to prevent waterlogging.

4. In the period of fruit growth and development, 0.4% urea solution or 0.3% potassium dihydrogen phosphate solution was sprayed on the crown to supplement the nutritional deficiency of peach trees. In addition, it is necessary to do a good job in the prevention and control of diseases and pests during the fruit growth period.