Four best methods for kiwifruit fertilization

According to the annual growth of kiwifruit and the law of fertilizer requirement, the four best fertilization schemes for kiwifruit are introduced for reference by fruit farmers. Early spring topdressing bud fertilizer. After the soil thaws in the spring and the sap flows, the trees begin to move. This period of fertilization is conducive to budding and flowering, and promotes the growth of new shoots. Pregerminating fertilizer should be applied before germination, and mainly available nitrogen fertilizer (nitrogen fertilizer accounts for 1/2-1/3 of the annual nitrogen fertilizer usage), together with a small amount of phosphorus and potassium fertilizers. The 4-year-old tree generally uses 8-10 kg of pure nitrogen, 4 kg of pure phosphorus, and 4 kg of pure potassium. Take the whole garden to spread or plant, apply spring water 1-2 times. After flowering to promote fruit fertilizer. 30-40 days after flowering, the fruit of kiwifruit is rapidly expanding. At this stage, the fruit grows rapidly and the volume increases rapidly. The lack of fertilizer will hinder the enlargement of kiwi fruit. The fruit-promoting fertilizer should be applied 20-30 days after flowering, which is mainly based on quick-effect compound fertilizer. Four-year-old trees can be applied with 0.25-0.3 kg of DAP per plant. After the garden watered the garden once. In the middle of the summer, strong fruit fertilizer is applied. In order to enrich the fruit, increase the weight of single fruit and improve quality, it is advisable to top-dress phosphorus and potassium fertilizers from June to July. In order to make up for the lack of nutrients in the growth of the shoots later, it is also possible to spray the available nitrogen fertilizer 1-2 times. This stage of spraying calcium fertilizer can also enhance the fruit's storability. The main application of this fertilizer is foliar spray. The fertilizer may use 0.5% potassium dihydrogen phosphate, 0.3%-0.5% urea solution, and 0.5% calcium nitrate. Post-harvest Jishi wintering fertilizer. After harvesting the fruit, the leaves lost a lot of nutrients, and supplying nutrients to the tree is particularly important. Before spraying, 0.5% urea solution can be sprayed on the foliage to increase the photosynthesis of the leaves, promote the return of nutrients to the roots and stems, and increase the nutrient reserve. In the autumn, Shiji Shi should be used early, mainly consisting of manure, manure, compost, manure, and cake manure, and some quick-acting fertilizers such as superphosphate and ammonium nitrate should be mixed. Usually 4 years old tree plant organic fertilizer 20-30 kg, plus 0.25 kg of superphosphate and ammonium nitrate can be. The whole garden can be applied or applied. Apply water once after application. China Agricultural Network Editor

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