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用７４１杨根系浸提液处理主要农作物和常见田间杂草的种子进行发芽试验，结果表明：７４１杨的他感作用是存在的。当７４１杨根浸提液的浓度分别为１，５ｍｇ·ｍＬ~－１时，对大豆、花生种子萌发有极显著的促进作用，高浓度则无明显影响；低浓度时对它们的幼苗根长和苗高生长具有促进作用，随着浓度的增大促进作用可达显著到极显著水平。玉米在没提液浓度最低时，种子萌发和幼苗根长及苗高的生长受到显著抑制，中等浓度时略有促进，但不明显。反枝苋、蟋蟀草受浸提液的抑制作用明显；小麦、狗尾草、虎尾草、马唐在高浓度时明显受到抑制，中低浓度时影响不明显。
741 Yang root leaching solution of the main crops and common field weed seeds germination tests showed that: 741 Yang his sense of presence. When the concentration of 741 Yang root extract was 1,5 mg · mL -1, the seed germination of soybean and peanut had a significant promotion effect, but no significant effect was observed at high concentration. At low concentration, And seedling height growth has a promoting effect, with the increase of concentration can promote significant to significant level. Seed germination and growth of seedling root length and seedling height were significantly inhibited in corn with the lowest concentration of non-extraction liquid, but slightly promoted at medium concentration, but not obvious. Anti-Amaranthus retroflexus and Cricket grass were significantly inhibited by the extracts; wheat, Setaria viridis, Chloris virgata, and Crabgrass were significantly inhibited at high concentrations, with no significant effects at low and medium concentrations.