How to plant and manage kiwi in summer:
First, smear topping
According to the principle of “early germination, timely picking, long branches and short cutsâ€, combined with the situation of tree potential, it should be trimmed several times in the growth period of kiwifruit to achieve high yield and stable yield. In the germination stage, the buds with improper or excessive density can be erased early; for the fruiting branches of the mature orchard, 8-10 leaves are topped out of the result part; the second branch germinated after the first heart picking, Leave 3-4 leaves for topping; for germination of three branches, leave 2-3 leaves for topping; for cultivated long branches or vegetative shoots, leave 10-15 leaves for topping; diseased branches and thin branches are generally sparse from the base except. Compared with other varieties, Hongyang kiwifruit is thin and large, with poor resistance, and the branches are slender and easy to fold. In strong winds, you should always pay attention to tie and vine. Most of the easy to be broken by the wind is the good result of the second year. In case of dry hot air, water can be sprayed on the surface of the leaves in case of conditions, so as to avoid dry hot air scalding the leaves. Gradually improve the microclimate and keep the kiwifruit in a warm and humid climate.
Second, flowering pollination
The initial flowering stage of kiwifruit is in late April, the flowering period is in early May, and the final flowering period is in late May. In the flowering period, when it is raining, it will pollinate badly, and artificial pollination should be carried out. The specific method is as follows: the male flower buds are collected in advance at the flowering period, the pollen sac is taken at room temperature at 25 ° C, and the pollen sac is opened after a day and night to collect pollen. In the female flowering period, two batches of pollination are carried out, and the pollination effect of the flower opened on the same day is good. The number of seeds in kiwi fruit is proportional to the fruit size. The fruit weight of single fruit is 130g, and the number of seeds in each fruit is 800-1200. The conventional artificial point method requires repeated pollination to meet the requirements, while the liquid pollination method has The pollination speed is fast, the dusting is concentrated, accurate, the pollination period is extended, and the pollen is saved.
Third, timely and fruitful
Strictly thin fruit, reasonable load, requires no use of strong fruit hormone. In principle, the same inflorescence is left as a single fruit and the same fruit and tail fruit are removed. The thinning fruit should be carried out 10-15 days after the flowering. According to the principle of “staying good and going bad, staying big and going small, leaving thin and dense, leaving the middle to the baseâ€, remove the deformed fruit, weak fruit, overlapping fruit, pests and diseases. fruit. In general, short fruit branches leave 1-2 fruits, middle fruit branches leave 3-5 fruits, and long fruit branches 4-6 fruits. In order to grow better quality fresh fruit, it is better to use bagging in conditional areas. 15 days after pollination, the second foliar fertilizer was sprayed, and 0.3% urea and potassium dihydrogen phosphate were used together with Merrill's high-efficiency calcium. Then spray once every 15 days and spray 5 times. After the first stop of growth of young fruit, potassium and nitrogen were used as the main fertilizer for 1 time.
Fourth, soil management
Soil is the basis for the good growth of kiwifruit. The root of kiwifruit is a fleshy root, and 70% of the roots grow in parallel. In management, the small tree is required to leave a tree tray of 1 meter, and the large tree is reserved for 2 meters of tree trays for other crops. The whole park is not a high-crop crop. In the tree tray, you should dip grass and loose soil to keep the soil breathable. Fertilize and weed as shallow as possible to avoid injury to the main root. Where there are conditions, it is possible to plant high-quality green manure in the tree tray or the whole garden and implement the no-till method. In summer, fertilization should be “less food and more mealsâ€. In principle, avoid applying high-concentration chemical fertilizers. Spray the foliar fertilizer and spray the water-soluble Merrill's high-efficiency calcium. In case of high temperature and drought, it should be watered before 11:00 am or after 4:00 pm. When combined with irrigation, it should be covered with straw, wheat straw, weeds, etc. to achieve the purpose of drought resistance and moisturization.
V. Pest Control
Flower buds occur mostly in April-May, causing a large number of falling flowers and fruit, and timely prevention and control. From June to September, it will prevent diseases such as soft rot and brown spot.
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