河西灌区3种主要农田杂草间的化感拮抗作用对小麦苗期生长发育的影响  

The Susceptible Effect of the Allelopathy among Three Main Farmland Weeds in West Irrigated Area of Gansu on Growth and Development of Wheat

作　　者：叶春雷[1] 崔文娟[1] 罗俊杰[1] 欧巧明[1] 

机构地区：[1]甘肃省农业科学院生物技术研究所,甘肃兰州730070

出　　处：《作物杂志》2013年第4期140-145,共6页Crops

基　　金：国家转基因生物新品种培育重大专项(2009ZX08005-013B);甘肃省农业生物技术研究与应用开发项目(GN-SW-2011-07)

摘　　要：比较研究了3种麦田杂草黄花蒿(Artemisia annua L.)、曼陀罗(Datura stramonium L.)和反枝苋(Amaranthus retroflexus L.)彼此间的拮抗作用对小麦幼苗生长的影响,结果表明:随杂草浸提液对小麦处理1次到3次的过程,杂草浸提液间的拮抗作用对小麦生长抑制作用累积效应明显;当黄花蒿浸提液浓度为0.3g/mL时,曼陀罗浸提液与反枝苋浸提液之间存在较强的拮抗作用,表现为对小麦生长促进作用明显;当曼陀罗浸提液浓度为0.1～0.3g/mL时,黄花蒿浸提液与反枝苋浸提液之间存在较弱的拮抗作用,表现为对小麦生长促进作用较弱;当反枝苋浸提液浓度为0.5g/mL时,黄花蒿与曼陀罗之间存在较弱的拮抗作用,表现为对小麦生长促进作用较弱。The effects of antagonism among three kinds of weed （Artemisia annua, Datura stramonium, and Amaran- thus retroflexus）on growth of wheat seedlings were studied. The results showed that ：with the treatment times of weed extracts to wheat from one to three, the cumulative effect of the antagonism effect of weeds extracts on wheat growth was significantly inhibited. When the concentration of water extract of Artemisia annua was 0.3g/mL, the antago- nism between Datura stramonium extract and Amaranthus retroflexus extract were strong, showing that effect promote wheat growth;When the concentration of Datura stramonium extract 0.1 -0.3 g/mE,the antagonistic effect between Artemisia annua extract and Amaranthus retroflexus extract was weak, showing weak effects on wheat tion;When the concentration of Amaranthus retroflexus O. 5g/mL the antagonism between Artemisia and Datura stramonium was weak,the performance of growth-promoting role for wheat is weak. growth annua promo- extract

关 键 词：化感作用 杂草 黄花蒿 曼陀罗 反 枝苋 小麦 拮抗作用 

分 类 号：S451[农业科学—植物保护] S512.1