枣树掉叶子怎么办 一碰就掉的原因及补救方法

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枣树掉叶子怎么回事

　　枣树进行环割势必会降低树势，落几片叶子是正常的。只要注意浇水施肥喷打叶面肥，是不会有问题的，这是正常现象。　

枣树掉叶子是什么原因

　　原因有很多，常见的有：高温干旱天气供水不足；树密、枝密、光照差；营养不足树势衰弱，结果量偏多；剥口太宽、环剥次数太多致使剥口愈合差，营养运输不畅；或者是药害选药不当，混用过多浓度太高喷药频繁造成叶受害。
　　还有可能是因为过多喷肥浓度和过高氩肥施用过量引起肥害；土壤盐碱化透气性差，排水不良导致枣树诋铁使叶片失绿；还有花叶病花叶病毒引起花叶、黄叶、落叶。
　

　
 

枣树叶子一碰就掉怎么补救

　　环剥一般只会影响营养的下行，不会影响到水分的向上传输。不一定是环剥的直接后果。干旱、虫害、病害都可能造成叶子脱落。磷酸二氢钾兑水喷雾试试。注意浓度。
　　

 

如何预防枣树黄叶掉叶

　　1、红蜘蛛初期危害枣树叶片呈现失绿，以后逐渐扩大成片，最后整叶焦黄脱落。对此，建议果农在麦收前后（红蜘蛛大量向树上转移的时期），及时喷药，30天左右1次，连喷2-3次。
　　2、锈病在叶片背面产生黄褐色铁锈状物，叶正面褪绿成花叶状；叶斑病在叶片主脉两侧或基部有灰褐色或褐色圆形斑点。对此，建议果农可从7月初开始喷药；10-15天1次，连喷4-6次。
　　3、开花后造成的落叶主要为生理性落叶。针对生理性落叶，果农要加强栽培管理，壮树防病。早施肥，争取每年采果前后施入基肥，萌芽后及时追肥浇水，增强树势。在开花前追施肥料，以氮肥为主，一般株施尿素1公斤左右。开花坐果期7天喷一次叶面肥。