西藏麦类作物对恶性杂草白茅抑制作用分析  

Inhibitory effect of wheat in Xizang on the malignant weed Imperata cylindrica in the field

作　　者：赵远 陈新兰 央金[1] 雷雪萍[1,2] 姚小波 ZHAO Yuan;CHEN Xinlan;Yangjin;LEI Xueping;YAO Xiaobo(Institute of Agriculture,Tibet Academy of Agriculture and Animal Husbandry Sciences,Lhasa 850000,China;Lhasa Experimental Station for Scientific Observation of Crop Pests,Ministry of Agriculture and Rural Affairs,Lhasa 850000,China)

机构地区：[1]西藏自治区农牧科学院农业研究所,拉萨850000 [2]农业农村部拉萨作物有害生物科学观测实验站,拉萨850000

出　　处：《植物保护》2023年第6期299-302,共4页Plant Protection

基　　金：西藏自治区重点研发计划(XZ202201ZY0002N)。

摘　　要：以西藏青稞‘藏青2000’和小麦品种‘高原437’为研究对象,研究了不同种植密度对西藏恶性杂草白茅的抑制作用。结果表明,供试的青稞和小麦品种对恶性杂草白茅种群数量有显著抑制作用。不同密度的青稞对白茅种群数量和干重的抑制作用没有显著差异。随着小麦种植密度增大,白茅种群数量差异显著,而干重差异不显著;当小麦种植密度达到15 kg/667m^(2)时,抑制白茅的作用最佳。在青稞与小麦种植密度相同时,对白茅种群数量和干重的抑制差异极显著,小麦的抑草效果更佳。Taking Tibetan highland barley‘Zangqing 2000’and wheat‘Gaoyuan 437’as the research objects,the inhibitory effects of different densities of highland barley and wheat on Imperata cylindrical were investigated in the field.The results showed that the main cultivated varieties of highland barley and wheat in Xizang had a significant inhibitory effect on the population of I.cylindrica,a malignant weed in Tibetan farmland.There was no significant difference in the population density,dry weight of I.cylindrica when the densities of the highland barley were changed.With the increase of planting density of wheat,there was a significant difference in population number of I.cylindrica,but there was no significant difference in dry weight.As the planting density of wheat at 15 kg/667m^(2),the inhibitory effect was the highest on the population of I.cylindrica.Under the same density of highland barley and wheat,there were extremely significant differences in the inhibition of population,dry weight of I.cylindrica,and wheat was more effective in inhibiting the grass.

关 键 词：杂草防除 麦类作物 白茅 抑制作用 西藏 

分 类 号：S435.123[农业科学—农业昆虫与害虫防治]