Pollution-free pear fertilization technology

1 base fertilizer: the autumn fruit is applied after harvesting, mainly organic fertilizer, such as compost, manure, circle fertilizer, manure and green manure, straw, weeds, etc., adding a small amount of nitrogen fertilizer. The amount of Shiji fertilizer generally accounts for 70% of the total fertilization of fruit trees in the whole year. The specific amount of fertilization per mu is applied according to the standard of 1.5 kg to 2 kg of high-quality farmyard manure per 1 kg of pear production. More than kilograms. The method of applying the base fertilizer generally adopts the method of ring ditch application, radial ditch application, etc., and the ditch depth is 40 cm to 60 cm. 2 soil topdressing: soil topdressing is mainly based on chemical fertilizers, and the growth period is generally 3 times per year. The first time before and after germination, nitrogen fertilizer was the main; the second time was in the flower bud differentiation and fruit expansion period, the phosphorus and potassium fertilizer was the main, and the nitrogen, phosphorus and potassium were mixed; the third time was the potassium fertilizer in the late fruit growth stage. The amount of fertilizer applied is determined by the local soil conditions and fertilization characteristics; the fertilization method is to open the ditch under the canopy, the ditch depth is 15 cm to 20 cm, and the water is poured in time after the top dressing; the last top dressing is carried out 30 days before the fruit harvesting period; Chlorinated fertilizer and chlorine-containing compound (mixed) fertilizer. 3 external top dressing: root dressing should be carried out according to the growth and results of the tree, usually spraying 4 times to 5 times a year, 2 times in the early stage of growth, mainly nitrogen fertilizer; 2 times to 3 times later, with phosphorus and potassium fertilizer Mainly, it can supplement the trace elements needed for the growth and development of fruit trees. Commonly used fertilizers include urea (0.2% to 0.3%), borax (0.1% to 0.3%), potassium dihydrogen phosphate (0.2% to 0.3%), etc. Avoid the high temperature time; the last time the top dressing was carried out 20 days before the fruit harvesting period. 4 irrigation: In general, the drought resistance and sorghum resistance of pears are stronger than apples, but the water requirement of pears is larger than that of apples; in the annual cycle, from germination to mid-May, generally after germination, before flowering and after flowering The purpose of irrigation is to promote vegetative growth and young fruit development; from the leaf-expanding stage to the embryonic stage (from late May to mid-July), in case of drought, trees with large trees, weak trees and many fruits should be Timely irrigation; fruit harvesting to deciduous period (mid-late September to November), combined with autumn-based base fertilizer, can be irrigated once after harvesting and before wintering.

Huaxian County Yuexiu Li

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