论文部分内容阅读
从生产实践看,紫云英的发展受耕作制度的制约,而紫云英的单产提高又为耕作制度的发展创造条件。为了进一步发展本地区的农业生产,必须根据耕作制度的特点和需要,在稳定紫云英现有面积的前提下,尽可能地提高紫云英的单位面积鲜草产量,以充分发挥它的养地作用。本地区双晚面积较大,大部分套种紫云英,近年来紫云英不仅面积减少,而且产量也有所下降,有些花草田甚至出现假花草真板田的现象。其原因主要是迟播易受秋旱与冻害,难于保苗,少数苗纵然保住了,也发
From the perspective of production practice, the development of Ziyunying is restricted by the farming system, and the improvement of the yield of Ziyunying creates the conditions for the development of the farming system. In order to further develop the agricultural production in this region, we must, as far as possible, stabilize the existing area of Astragalus mongolicus according to the characteristics and needs of the cultivation system and maximize the yield per unit area of Astragalus sinicus to give full play to its support To effect. In the area of double night larger area, most of the intercropping vetiver, in recent years not only reduced the area of asparagus, and the yield also declined, and some flower fields and even the phenomenon of real flowers and plants. The main reason is late sowing easily affected by autumn drought and frost damage, it is difficult to seedlings, even if a few seedlings saved, but also hair