August is a critical period for the formation of kiwi fruit quality. In terms of management, it is necessary to increase the ventilation and light transmission of the shelf, increase the efficiency of photosynthesis, and at the same time, make the organic nutrients flow to the fruit fully to lay a solid foundation for high-quality fruit.
Do a good job in shelf management and improve the efficiency of photosynthesis. If the shelf surface is too dense, cut the branches out of the second wire and leave them above the top fruit equal to the number of fruits or 1.5 times the number of fruits. Other branches and vines will be lighter when the new shoots become thinner and are about to grow. Topping can promote nutrient return and increase fruit yield and quality.
Regulate nutrient distribution and improve fruit quality. 13~14 weeks after the kiwi fruit sets fruit, perform 1~2 girding or girdling at the base of the main stem or the base of the mother branch. Or use aluminum wire or fine tie wire to tie 1-2 times. Loosen when the main stem is thickened or cut too deep. It can increase fruit yield (increase single fruit weight) and quality.
Prevent and control plant diseases and insect pests timely and maintain sufficient effective photosynthesis area. The summer heat in August may cause early leaf fall due to diseases and insect pests, so attention must be paid to pest control.
If the disease is serious, spray 1000~1500 times 50% chlorobromoisocyanuric acid, add 0.3%~0.5% calcium chloride, spray twice every 10 days to control the spread of the disease.
In the late stage of fruit development in August, when preventing pests and diseases, the quality and safety of fruit should be considered, and fruit residues should not be accumulated. When the disease is controllable, beneficial bacteria can be used as the main agent, and the bacteria can be used to control the bacteria and comprehensively prevent and control the disease. Bacillus subtilis, Bacillus amyloliquefaciens, Streptomyces gracilis, Bacillus Laterosporus, lactic acid bacteria, em inoculum (white sugar propagation) can be selected as the inoculum. But pay attention: once the inocula is used, use it continuously and spray it regularly to prevent it. Do not mix fungicides when spraying bacteria.
For pest control, use chlorpyrifos, abamectin, emamectin benzoate, beta-cypermethrin, imidacloprid, etc. to spray. Note that when chlorobromoisocyanuric acid is used as a fungicide, no insecticide is added.
In August, the new breeding season of nematodes begins, and if the garden has root nodule nematode disease, use 500 to 1000 times solution of Paecilomyces lilacinus to perfuse the root distribution layer to prevent its spread.
In late August, in orchards that are susceptible to ulcer disease and severe skin cracking in spring, use "Tu Kui" to smear the main stem, main vine, and bifurcation to prevent ulcer disease.
For gardens with too much fruit, before picking the fruit bags, spray a biocontrol agent plus brassinolide plus multiple micro-fertilizers (such as algin, amino acid), bacteria agents such as Bacillus subtilis, lactic acid bacteria, em, etc., and card Saifu and other foliar fertilizers can prevent a large number of leaves from suddenly falling after the fruit is picked.
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