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guo shu gen fu bing qia xuan yao wu fang zou xiao
Author(s): 
Pages: 55
Year: Issue:  14
Journal: Farm Machinery

Keyword:  根腐土壤板结发酵腐熟拮抗作用通透性抗病能力疫霉菌磷元素氮元素药剂选择;
Abstract: <正>果树根腐病近年呈发展态势,虽然病株率较低,但往往造成全株枯死。根腐病是危害苹果、梨、桃、葡萄等果树的一种毁灭性病害。由于近些年来部分果农施肥不够科学合理,致使土壤中过多的磷元素不能被果树吸收利用,还对氮元素产生一定的拮抗作用,使土壤板结加重,通透性遭到破坏,导致果树抗病能力大幅度下降。加上部分果农过量使用极易引起烧根现象的碳酸氢铵和未经发酵腐熟
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