摘要
在半干旱的辽西地区,旱作条件下的沙打旺和紫花苜蓿,不同播种时期的第一、二、三年产草量,均与播期的早晚存在极显著地负相关关系和回归关系。适期早播是获得高产的有效措施之一。
There-are highly significant negative correlations and regression relation-ships between the various late or early sowing times and fresh output of milkvetch(Astragalus huangheensis)and Alfatfa(Medicago Sativa)in the1st,2nd and 3rd years under the dryland farming conditions in the semiaridarea of West Liaoning through experiments,The results showed that the appro-priate early sowing is one of the effective measures for increasing the freshoutput of milk vetch and alfalfa.
出处
《干旱地区农业研究》
CSCD
北大核心
1991年第4期37-40,共4页
Agricultural Research in the Arid Areas
关键词
沙打旺
紫花苜蓿
播期
旱作
产量
semi-arid area
Astragalus huangheensis
alfalfa
fresh output
