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为什么说覆盖黑色地膜是葡萄苗促长的关键?

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葡萄苗长得好,第二年才能正常挂果,获得理想的回报。

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今后我们将陆续学习葡萄苗种植的系列技术。今天就简单谈谈为什么说铺设黑色地膜是葡萄苗促长的关键呢?
 
首先,保湿。覆盖黑色地膜期间,土壤始终保持适宜葡萄苗根系生长的湿度。
 
其次,保温。早春季节,覆盖黑色地膜有利于提高葡萄苗根系的温度,促进葡萄苗早生快发。
 
第三,灭草。铺设黑膜和白膜其他效果差不多,最大的区别在于黑色地膜覆盖完好的地段寸草不生。
 
第四,肥料分解更彻底。
 
最后,病虫害可以大大减轻。
 
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葡萄种植园在葡萄苗种植后就要及时覆盖黑色地膜了,那么什么时候除去黑色地膜比较合适呢?
 
1.没有微喷条件的葡萄种植园,一般葡萄苗长至6-8叶,需要施肥浇水时;
 
2.有微喷条件的葡萄种植园,一般葡萄苗所有主蔓均18叶剪梢后。
 
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葡萄苗地上部分生长成熟后,应该促进葡萄苗根系向下生长,根深才能叶茂。
 
南方北方多地葡萄种植园实践,覆盖黑色地膜的葡萄种植园是没有覆盖黑色地膜园生长量的1.5倍。一般选用1个丝的黑膜即可,每亩大概5-6斤,价格比较适中,一般葡萄种植园都能接受。
 
 
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