At present, it is the critical period for the expansion of kiwifruit fruit and the formation of fruit quality. It is also the peak period for demanding fertilizer and the most serious pest and disease hazard. It is of utmost importance to seize this period of management. Liu Zhande, associate professor of the College of Horticulture, Northwest A&F University, said that during this period, it is necessary to sparsely set fruit and apply fruit to inflate fertilizer to prevent and control pests, control irrigation and weed management.
When fruit thinning is performed 15 to 20 days after flowering, the sparsely pollinated fertilized fruit, disease and fruit, stale fruit, and small fruit are sparsely pollinated, and the normal fruits with thick and well-developed fruit stems are retained; As a result, the length of the shoots was adjusted to the number of fruits, generally 3 to 4 strong and long fruiting branches, 2 to 3 fruit trees, and 1 fruit to short fruit branches. In the fruity period, the average kiwi fruit is generally 23,000 to 25,000 fruits per mu, and the Chinese kiwi fruit is 24,000 to 28,000 fruits per mu. In view of the unfavorable situation of fruit set in some orchards this year, different measures should be taken according to the growing situation of the fruit trees and the results, so as to eliminate the poorly pollinated fruits in time.
Top dressing In early June, Mushi full organic nutrient fertilizer 200 kg, or each topdressing NPK fertilizer 1 kg, plus 0.5 kg of microbial fertilizer.
Irrigation in June is the critical period of water requirement for kiwifruit. Water supply must be guaranteed in order to meet the growth of kiwifruit. It should be based on soil moisture, combined with fertilization, timely irrigation, and conditional orchards should implement integrated fertilization of water and fertilizer. Irrigation should be avoided at noon, otherwise the ground temperature will rapidly decrease, causing the tree to wilt.
The prevention and control of diseases and insect pests in the whole park once used to control pests and diseases such as cockroaches, plagioclase, oriental salivation, and brown spot disease. The agent may use 2.5% of 2.5% cyhalothrin 25%, plus 800 times the anti-drug 120 or more antibiotics.
Biological control In the middle and late June, the whole park artificially released predatory mites and controlled red spiders. In general, each kiwifruit can be hung with a bag and hung on branches and branches.
Science Summer Shear The low-temperature and rainy weather in early May this year was very unfavorable to pollination of kiwifruit, resulting in poor fruiting in some orchards and strong shoot growth. The dense branches and winding branches should be removed to maintain the balance of vegetative growth and reproductive growth. At the same time, the vines should be evenly bundled to improve the ventilation and lighting conditions. It is advisable to distribute the light spot evenly around the ground at about 12:00 noon.
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