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The key to high yield of red heart kiwifruit is fertilizatio

Topdressing fertilizer in early spring: After the soil thaws in spring and the sap flows, the tree begins to move. Fertilization during this period is beneficial to sprout flowering and promotes the growth of new shoots. The germination fertilizer should be applied before germination, mainly with quick-acting nitrogen fertilizer (nitrogen fertilizer accounts for 1 / 2-1 / 3 of the annual amount of nitrogen fertilizer), with a small amount of phosphorus and potassium fertilizers. 4-year-old trees generally apply 8-10 kg of pure nitrogen, 4 kg of pure phosphorus, and 4 kg of pure potassium.
Further promotion of fruit fertilizer after flowering: 30-40 days after flowering is a period of rapid expansion of kiwi fruit. In this stage, the fruit grows rapidly and the volume increases quickly. The lack of fertilizer will prevent the expansion of kiwi fruit. Fruit promoting fertilizer should be applied 20-30 days after flowering, mainly with quick-acting compound fertilizer. Each 4-year-old tree can be applied with 0.25-0.3 kg of diammonium phosphate. Water the whole garden once after application.
Further application of strong fruit fertilizer in midsummer: It is advisable to apply phosphorus and potassium fertilizer once in June and July. In order to make up for the nutrient deficiencies during the growth of the shoots in the later period, foliar application of quick-acting nitrogen fertilizer may be applied 1-2 times. Foliar spray of calcium fertilizer at this stage can also enhance the fruit's storability. This fertilization is mainly based on foliar spraying. The fertilizer can be selected from 0.5% potassium dihydrogen phosphate, 0.3% -0.5% urea solution and 0.5% calcium nitrate.
Post-harvest basal application of overwintering fertilizer: It is advisable to apply basal application early in autumn. It is mainly based on organic manure such as manure, compost, compost, barnyard fertilizer, cake fertilizer, etc., and mixed with some quick-acting fertilizers such as superphosphate and ammonium nitrate. Generally, a 4-year-old tree plant should be applied with 20-30 kg of organic fertilizer, plus 0.25 kg of superphosphate and ammonium nitrate. The whole garden can be spread or ditched. Irrigate once in time after application.
Cultivation area: The suitable area for the growth of red heart kiwifruit is relatively wide. Up to now, Japan, New Zealand, Beijing, Shanghai, Zhejiang, Henan, Jiangxi, Shaanxi, Jiangsu, Guizhou, Guangdong and Guangxi have been promoted in areas where red kiwifruit is cultivated. , Yunnan, Hunan, Hubei, Chongqing, Sichuan and other places. The cultivation of red heart kiwifruit chooses different altitudes according to different geographical diameters and latitudes. At present, the altitude of planting red heart kiwifruit is in the range of 60-1600 meters.
Soil selection: Red kiwifruit is cultivated with fertile, loose and slightly acidic loam for its best growing soil environment. The quality of the soil is one of the key factors affecting plant growth. Therefore, although red heart kiwifruit can adapt to various types of soil growth, soil improvement must be carried out to make it rapidly soiled to benefit the growth of red heart kiwifruit. The thickness of the soil layer must be at least 80 cm.
Planting and planting: Seedlings are planted generally from September to November using artificial seedlings. Turn the garden to a depth of 50-70 cm, plant a nest of 60 cm deep, nest diameter of 1 m, compost 40 kg, phosphate fertilizer 2.5 kg and soil, mix well and backfill, plant seedlings in early spring and late autumn, firmly fix the seedlings to irrigate the roots water. The plant row spacing is generally 4m × 2m or 3m × 2m.

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