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1水肥调控水是命脉肥,是劲,有产无产在于水,产多产少在于肥。如果树势过旺,就应当少施氮和磷,少灌水,树势就减弱;反之,树势过弱,就要多施氮和磷,多灌水,树势就会增强。同时,实践证明,每年秋季施基肥时,给盛果期苹果树每667m2施优质有机土肥5000kg以上或生物有机肥200kg加45%复合肥100kg,在保持稳定树势上能够起到举足轻重的作用。
1 water and fertilizer regulation of water is fat pulse, is strong, there is no production of water, produce less fat. If the tree vigor is too vigorous, it should be less nitrogen and phosphorus, less irrigation, the tree potential weakened; the other hand, the tree is too weak, it is necessary to more nitrogen and phosphorus, more irrigation, the tree will be enhanced. At the same time, it has been proved that each application of basal fertilizer in autumn gives 5000mg or more of excellent organic fertilizer per 667m2 or 200kg of bio-organic fertilizer and 100kg of 45% compound fertilizer in the full-fledged apple tree, which can play a decisive role in maintaining the stability of the tree.