柑桔冬季落叶原因及其预防“冬叶茂，秋果丰”，要想柑桔获得丰产优质，必须首先保证树上有大量叶片越冬。导致冬季叶片脱落的原因很多，笔者认为主要有以下几点。１．偏施氮肥，或施氮肥过量，使老叶寿命缩短，提前脱落。２．采果前后化肥干施，或加水量不足，肥液浓度过... Citrus winter deciduous causes and prevention “Ye Yemao, autumn fruit abundance”, to citrus to obtain high yield and quality, we must first ensure that the tree has a large number of leaves overwintering. Lead to winter leaves off for many reasons, I think the main points are as follows. 1. Partial nitrogen fertilizer, or excessive nitrogen fertilizer, so that the old leaves shortened life expectancy off. 2. Before and after picking fruit dry fertilizer, or add less than water, fertilizer concentration over ...