First, bagging must be done in the middle and the middle of June. It is necessary to spray protective and therapeutic fungicide before bagging.
Second, fertilizer management
Top dressing: June top dressing is especially important. In this period, the topdressing should be based on quick-acting fertilizer, highlighting potassium and nitrogen fertilizers, and assisting phosphate fertilizer. It is necessary to grasp the critical period of flower bud differentiation and proceed as soon as possible. The purpose is to enrich the top buds and improve the quality of flower buds next year.
Foliar spray fertilizer: In the middle of June, the whole tree is sprayed 1~2 times 300 times amino acid + sedkamp 6000 times + 1000 times of heavy calcium or 800 times of calcium lactate or 800 times of Gayles, supplementing nutrition and promoting flower buds Differentiate and alleviate calcium deficiency diseases such as bitter pox disease and acne spot disease.
Underground topdressing: It is very important to apply nitrogen fertilizer in June, which is the maximum fertilizer efficiency period of nitrogen fertilizer. Based on quick-acting nitrogen fertilizer, appropriate application of phosphate fertilizer and potassium fertilizer.
Third, the orchard covered with straw covered in the soil surface of the orchard, can reduce the intensity of sunlight, reduce the ground temperature in summer, and reduce the evaporation of ground water. Improve the growth environment of fruit trees and the microclimate of orchard, promote the growth and development of the underground and aboveground parts of fruit trees, and improve the yield and quality of fruit.
Fourth, summer pruning
Shuzhi: It is necessary to promptly remove excessive and excessive branches.
Ring cutting: continue to carry out ring cutting on Wangshu and Wangzhi, control growth and promote flower bud differentiation.
Twisting: Twisting the branches on the back of the semi-lignized, over-casting branches, twisting branches, and other branches can also be carried out at the same time.
Softening the branches: In the middle and late June, after the spring shoots are stopped, the branches can be softened for 1~3 years. The method is: from the base to the tip, the erect branches are manually smashed into a horizontal or downward state by an erect state.
Topping the leaves: The time of picking the leaves should be carried out every time the vegetative growth approaches the stoppage, that is, in the middle and late May, and in the middle and late July.
Young trees pull branches: Each orchard must determine the angle of the branches of the branches according to the actual situation, in order to control the principle of continuing to extend growth and promote flower formation as soon as possible.
V. Pest Control
Ring disease: The diseased spots on the branches and the latent pathogens on various dead branches have entered a period of large number of spore formation. If rainfall or high humidity, a large number of spores are emitted to infect the fruit, causing the fruit to be bacteria. Spraying in time after rainfall is the key to reducing the bad fruit in the later period. Spotted deciduous disease: In late June, if there is more rainfall, the young leaves of the diseased part may be infected by a large number of pathogens, and severely affected from July to August. The Marshal Orchard should pay close attention to timely spraying and preventing the disease.
Hawthorn leafhopper: Falling leaves can occur in mid-to-late June. Before and after the wheat harvest, we must pay special attention to prevention and control.
Peach small heartworm: Overwintering larvae are the peak period of excavation in mid-to-late June. The larvae are closely related to rainfall and the effect of pesticide control is better when the larvae are unearthed.
Rot disease: June to July is a critical period for the prevention and control of apple tree rot disease.
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