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红香蕉、红星、红玉等苹果品种在接近成熟至采收前,由于果实细胞乙烯含量增多,促进纤维素酶的活动,使果柄产生离层而落果。采前落果对苹果产量、质量都有很大影响。防止苹果采前落果的方法:(1)加强肥水管理。在果实膨大期追肥和叶面喷肥,并及时浇水。施肥以复合肥为好,不要施氮肥过多,浇水也不宜大,以免枝条旺长。(2)防治病虫害,保证叶片完好。7—8月份是病虫害严重发生时期,如早期
Red banana, red star, red apple and other apple varieties in the near mature to harvest before, due to increased ethylene content in fruit cells, and promote the activity of cellulase, stalk produce separation and decollement. Pre-harvest fruit on the apple production, quality has a great impact. Prevent apple from falling before fruit picking methods: (1) to strengthen fertilizer and water management. In the expansion of the fruit top dressing and foliar fertilizer, and timely watering. Fertilizers to compound fertilizer as well, not too much nitrogen fertilizer, water should not be large, so as to avoid the branches Wang Chang. (2) Prevention and control of pests and diseases, to ensure that leaves intact. July-August is a period of serious pests and diseases, such as early