What should you pay attention to for kiwifruit in summer? Key points of cultivation techniques
What should you pay attention to for kiwifruit in summer? Please note that kiwifruit in summer should be protected against the following: Preventing wilting. During the high-temperature period in summer, kiwifruit leaves wilt, mainly for two reasons: first, high temperature and drought, mostly occurring from 12 noon to 4 pm on sunny days. They recover in the morning and evening, and it usually occurs over a large area. When this happens...
What should you pay attention to for kiwifruit in summer? Please explain
Kiwifruit in summer should be protected against the following:
Preventing wilting. During the high-temperature period in summer, kiwifruit leaves wilt, mainly for two reasons: first, high temperature and drought, mostly occurring from 12 noon to 4 pm on sunny days. They recover in the morning and evening, and it usually occurs over a large area. When this happens, irrigate promptly in the morning and evening, and the wilting can be relieved. Second, the root system suffers from root rot, root-knot nematode disease, etc., which damages root function and causes pathological wilting. It is most severe at noon and lasts a long time; in severe cases, symptoms also appear in the morning and evening, and it occurs in a scattered pattern. Once discovered, dig up the roots for inspection. If it is indeed caused by pests or disease, appropriately prune branches and leaves, remove some or all of the fruit, and use pesticides such as Nongkang 120 and Junlimie for root drenching. If it is root-knot nematode disease, add an appropriate amount of 10% phorate or carbofuran insecticide when drenching the roots.
Preventing sunscald. Sunscald is a common physiological disease of kiwifruit in summer. In addition to measures such as irrigation during high-temperature periods, reasonable summer pruning, maintaining a suitable leaf-to-fruit ratio, and controlling fruit load, spraying Meilin high-efficiency calcium twice during the young fruit stage (15-20 days apart) and bagging each exposed fruit individually can effectively prevent sunscald and other physiological diseases.
Preventing shade. For trees in full fruit stage, neglecting bud thinning and applying excessive or heavy nitrogen fertilizer can easily lead to vigorous growth and shading. Prevention methods are: 1) In winter, promote pruning with fewer branches and more buds to reduce the number of branches retained on the tree. 2) In summer, lightly thin buds and heavily pinch tips. For secondary shoots sprouting after the first pinching, leave 3-4 leaves; for tertiary shoots, leave 1-2 leaves and repeatedly pinch. 3) Open the light path. For the outer branches on the trellis (outside the second wire), repeatedly pinch the fruiting shoots at 2-3 leaves, and remove vegetative branches. 4) Shorten and remove weak fruiting shoots and temporary fruiting shoots that emerge under the trellis. 5) Remove old and yellow leaves. Through the above measures, achieve a high-yield orchard appearance of "no tangling on the tree, a gap between rows, flower shadows visible under the tree (light transmittance about 30%), and sunlight on every branch."
Preventing wind damage. Windy weather causes great damage to kiwifruit trees, and the solution is to tie the vines well. The basic requirements are: orchards in the windward position should have every branch tied, and attention should be paid to establishing windbreak forests. General orchards should adhere to tying outer branches but not inner ones, tying upper branches but not lower ones, and tying firmly but not dead-tight. The "8"-shaped tying method should be promoted for tying vines.
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