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七十年代以来.光叶苕子产种量锐减,严重影响绿肥的栽培面积.对此,本院自1977年开始,在宿迁与县农科所合作,采取试验、示范、推广相结合的方法研究留种技术,以提高种子产量.1977和1978两年.着重观察光叶苕子(以下简称苕子)的生物学特性,同时,在有关公社农科站进行栽培技术示范试验.1979年综合采用已成熟的措施,进行高产留种试验,苕、麦间作留种田亩产苕种194.3斤,基本上达到了设计的指标.
Since the 1970s, the sharp decline in the production of Bullacta obtusifolia has a serious impact on the area under cultivation of green manure, and since 1977, in cooperation with the county agricultural institutes, this institute has adopted a combination of experiments, demonstration and popularization In order to improve the seed yield, in 1977 and 1978, the biological characteristics of Radix Scutellariae (hereinafter referred to as Radix Scutellariae) were observed, and at the same time, demonstration experiments of cultivation techniques were carried out in the commune agricultural stations. Measures to carry out high-yielding seed-keeping test, 苕, wheat inter-plantation to maintain a yield of 194.3 pounds per mu, basically reached the design of indicators.