论文部分内容阅读
我省栽培的紫云英,绿肥鲜草产量较低,一般亩产2000—3000斤,低产的只有1000斤内外,高产的也不过5000斤左右。低产原因有栽培管理技术问题,也有品种质量问题。多年来,我所虽也选出了一些产量较高的新种系,但由于目前国内栽培的紫云英品种都是属于二倍体类型,受原来种性的限制,增产幅度只在20％左右,未能满足生产上的要求。据国外资料报导,日本于五十年代已育成四倍体紫云英,增产效果显著。四倍体紫云英的茎叶、花器、荚果、籽实常有巨大型变异的特点,植株生势也常表现有特殊的繁茂性,所
Myrrh miltiorrhiza cultivation in our province, green fertilizer fresh grass yield is low, generally 2000-3000 pounds per mu, low yield only 1000 pounds both inside and outside, high yield but also about 5000 pounds. The reasons for the low yielding cultivation and management of technical problems, there are varieties of quality problems. Over the years, although I have also selected some higher yield new germplasm, but because of the current cultivated Astragalus varieties are diploid types, subject to the original species constraints, increase rate of only 20% Left and right, failed to meet the production requirements. According to foreign reports, Japan in the fifties has been breeding tetraploid Ageratum, yield significant results. Tetraploid Astragalus stems and leaves, flowers, pods, seeds often have the characteristics of a huge mutation, plant growth potential also often has a special lush,