Key Technical Points and Precautions for Kiwifruit Cultivation in Summer
What should be paid attention to for kiwifruit in summer? Please introduce the following three points that need attention for kiwifruit in summer: Preventing wilting. Kiwifruit leaves wilt during the high-temperature period in summer, mainly for two reasons: First, high temperature and drought, mostly occurring from 12 noon to 4 pm on sunny days, recovering in the morning and evening, usually occurring over large areas. When this occurs...
What should be paid attention to for kiwifruit in summer? Please introduce
Kiwifruit needs attention to the following three points in summer:
Preventing wilting. Kiwifruit leaves wilt during the high-temperature period in summer, mainly for two reasons: First, high temperature and drought, mostly occurring from 12 noon to 4 pm on sunny days, recovering in the morning and evening, usually occurring over large areas. When this occurs, irrigate promptly in the morning and evening, and the wilting can be relieved. Second, root rot, root-knot nematode disease and the like damage the root system, causing pathological wilting due to destroyed root function. It is most severe at noon and lasts a long time; in severe cases, symptoms also appear in the morning and evening, and show a sporadic occurrence pattern. Once discovered, dig up the roots for inspection. If it is indeed caused by pests or diseases, appropriately prune branches and leaves, remove some or all of the fruit, and use agents such as Nongkang 120 and Junlimie for root irrigation.
Preventing sunburn. Sunburn is a common physiological disease of kiwifruit in summer. In addition to preventive 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 also effectively prevent sunburn.
Preventing shading. For trees in full fruit stage, neglecting bud thinning and applying excessive or heavy nitrogen fertilizer can easily lead to excessive vegetative growth and shading. In summer, thin buds lightly and pinch tips heavily. For secondary shoots sprouting after the first pinching, keep 3-4 leaves; for tertiary shoots, keep 1-2 leaves and repeatedly pinch the tips. Open the light path. For the outer branches on the trellis (outside the second wire), repeatedly pinch the tips of fruiting branches at 2-3 leaves, and thin out vegetative branches. Shorten and thin out weak fruiting branches and temporary fruiting branches that emerge under the trellis. 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 under the tree, and sunlight on every branch."
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