摘要
重迎茬亚麻减产是由多种因素综合作用的结果,亚麻重迎茬可使病害加重是最主要因素,重茬年限越久发病越严重;重迎茬造成了土壤营养元素的单一消耗,随着重迎茬年限的增加,土壤中速效氮、速效磷、速效钾等含量降低。
The reduction of flax yield is caused by multi-factors, continuous cropping of flax is the major reason. With the years of continuous cropping of flax increasing, the phenomenon become more serious. Some nutrient elements are less and less, the content of effective N.P.K descend a lot.
出处
《黑龙江农业科学》
2004年第3期24-26,共3页
Heilongjiang Agricultural Sciences
基金
黑龙江省科技攻关项目(GC01B306)
国家(948)资助项目
