Key points of post-anthesis management of kiwifruit
40 days after flowering, kiwifruit is the key period of kiwifruit management, fruit rapid expansion, need a lot of nutrients and water. 1. Fertilization After the flowers fall, in the middle of May, urea, diammonium, potassium chloride or ternary compound fertilizer shall be applied in time. The fertilizer application amount of Sheng orchard shall be 20 kg urea, 15 kg diammonium and 20 kg potassium chloride per mu. The fertilization method shall be cultivated after sowing. Second, irrigation in the rapid expansion of fruit, water plays a decisive role in fruit expansion, with sufficient water, fertilizer can play a role in promoting the rapid growth of fruit and shoots, in this period, should keep the ground moist. If the ground is dry and the leaves are not wilting at noon, they should be watered in time. Third, next year's fruiting branches are reserved in early June, and the fruiting branches or excess branches with better position are selected as preparatory branches. The number of preparatory branches is 30% larger than that determined during winter shearing. For orchards with plant spacing of 3 meters, 26 preparatory branches are reserved for each plant. For orchards with plant spacing of 2 meters, 19 preparatory branches are reserved for each plant. After confirming the prepared branches, thinning the overdense branches to reach the sunny crown. At noon, there are 30% sunlight classes under the crown. 4. Pest control The middle of May is the best time to control mulberry shield scale, 98.8% kill times 200 times EC or 52.25% farmland Le EC 1500 times. In early June, the damage period of kiwifruit beetle was 1500 times of 2.5% kungfu or 800 times of 0.26% matrine. When spraying, you can add 500 times of Jinong to prevent and treat deficiency.
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Cutting Seedling of improved varieties of Actinidia
In order to prepare the cutting seedling bed, the dry soil with high topography, loose soil and certain water retention capacity should be selected. After ploughing, the land was arranged into a seedbed about 1 meter wide and 25 centimeters high, mixed with a certain amount of river sand on the bed surface, and disinfected the soil twice with 1% 0.5% potassium permanganate. Softwood cuttings around the middle and late June,.
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Removal method of kiwifruit rust
1. Garden selection: choose shallow mountains and hills with leeward to the sun, sufficient water source, convenient drainage and irrigation, deep soil layer and rich humus. One meter square hole was used for soil preparation, and farm manure 50kg and mature cake fertilizer 2kg were applied to each hole. 2. Planting technology: one-year products were grafted into strong seedlings with a row spacing of 3 m.
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