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you ji fei gao xiao shi yong si guan jian
Author(s): 
Pages: 51
Year: Issue:  22
Journal: Farm Machinery

Keyword:  分施土壤固定养分供应改良土壤土中黏土地缓效烧苗优质有机肥料养分释放;
Abstract: <正>有机肥作为基肥,可铺在苗床上,局部改良土壤;也可将有机肥撒到地表,在播种前随着翻地将肥料全面施入土壤表层,然后耕入土中。施用原则如下。①条施、穴施、集中施用,特别是生物有机肥和功能性有机肥。从肥效上看,集中施用对发挥磷素养分的肥料最为有效。如果直接把磷素养分施入土壤,有机肥料中速效态磷成分易被土壤固定,因而肥效降低。沟施、穴施的关键是把养分施在根系能够伸展的范围内。最理想的施肥方法是,肥料不要接触种子或作物的根,
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