Recently, readers of Baoji City, Shaanxi Province, called this newspaper, saying that the recent high temperature caused the leaves and leaves of their own kiwifruit leaves, I do not know how to deal with them. To this end, the reporter interviewed Associate Professor Yao Chunchao of the College of Horticulture of Northwest A&F University. He said that in the summer, the tree management should be grasped and the tree should be strong.

Water and fertilizer science management promotes high-yield summer fertilization should be applied in small amounts, followed by nitrogen, phosphorus and potassium compound fertilizers, appropriate increase of phosphorus and potassium fertilizer ratio, application or radiation application, and post-application and soil mixing. It is applied at the end of July and the beginning of August. The fertilization position is 80-100 cm from the main stem, and the fertilization depth is l5-20 cm. Fill the water after each fertilization. In case of high temperature and drought, water should be poured before 11:00 am or after 4 pm. The grass can be covered with grass to stabilize the soil temperature and keep the soil loose and breathable. Summer pruning continues to adopt a combination of sparse and short combination, which can increase the inner light of the canopy, while avoiding the early leaves of the leaves.

When controlling pests and diseases, agricultural, physical and chemical comprehensive control measures should not be mistakenly adopted, and plant sources, mineral sources and biological sources should be selected for high-efficiency, low-toxicity and low-residue pesticides. From June to August, the main prevention and control of brown spot disease, small salary armor, red spider and other pests and diseases, according to the actual situation of the orchard, can be targeted to use insecticides, fungicides, so that the medicinal, foliar fertilizer and other reasonable mix, can not increase the concentration , or spray more types of fertilizers at a time to avoid phytotoxicity. Spraying in the summer should be done before 11 am or after 5 pm to avoid medication during high temperature periods.

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