The results showed the 40 % fomesafen - harness suspension emulsion was safe to soybean field and has good control effect to graminaceous weeds and broadleaf weeds and can not influence the yield of soybean 结果表明： 40 %虎乙悬浮乳剂对大豆田安全对单、双子叶杂草有较好的防治效果，对大豆产量无影响。
2.
It has been 40 years since dobereiner and ruschel isolated the nitrogen - fixing bacteria from the rhizosphere of sugarcance plants and demonstrated the potential of diazotrophs to associate with graminaceous plants . more recent evidence of significant biological nitrogen fixation in economical important graminous species , particularly sugar cane , rice and forage grasses , has induced tremendous interest in ni fixation by non - legumes 本研究分离、筛选得到一株固氮酶活性高且稳定，生长势强的联合固氮菌株，并对其分类地位、形态及生理特征、对环境的适应性及其对植物的促生效果和作用机理作了系统研究，得结果如下。
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