荞麦不同密度套种对田间杂草控制及魔芋生长的影响  

Effect of Fagopyrum esculentum in Relay Intercropping with Different Densities on Weed Control and Growth of Amorphophallus konjac

作　　者：丁海兵 姚明勇 罗林丽 赵兴丽 邹涛 刘军林 DING Haibing;YAO Mingyong;LUO Linli;ZHAO Xingli;ZOU Tao;LIU Junlin(Guizhou Institute of Biotechnology/Key Laboratory of Agricultural Biotechnology of Guizhou Province,Guiyang 550006,China;Bijie Institute of Traditional Chinese Medicine,Bijie 551700,China;Mountain Characteristic Agricultural Science Research Institute of Weining Yi,Hui and Miao Autonomous County,Weining 553100,China)

机构地区：[1]贵州省生物技术研究所/贵州省农业生物技术重点实验室,贵州贵阳550006 [2]毕节市中药研究所,贵州毕节551700 [3]威宁彝族回族苗族自治县山地特色农业科学研究所,贵州威宁553100

出　　处：《杂草学报》2024年第2期57-62,共6页Journal of Weed Science

基　　金：贵州省省级科技计划项目(编号:黔科合支撑〔2021〕一般206、黔科合支撑〔2023〕一般051);贵州省农业科学院青年基金项目(编号:黔农科青年基金〔2023〕27号)。

摘　　要：为深化生态控草技术研究,采用1次播种荞麦控草技术方案,共设置5个荞麦播种密度梯度(3.5、7.0、10.5、14.0、17.5 kg/667 m^(2))处理和1个对照(CK,不进行化学除草、不播种荞麦),于2022年在贵州魔芋主产区威宁县开展田间小区试验,探索荞麦不同密度套种对田间杂草控制及魔芋生长的影响。结果表明,荞麦套种对魔芋地杂草有较好的控制作用,随着荞麦密度增加,对杂草的株防效、鲜重防效呈增加趋势;荞麦播种密度对魔芋出苗率影响不大,各处理之间差异不显著(P>0.05);随着荞麦播种密度增加,魔芋主茎高度呈增加趋势,叶盘直径、主茎直径呈现先增后减现象;采用荞麦控草对魔芋有增产效果,增产率在4.26%~19.85%之间,荞麦播种密度为10.5 kg/667 m^(2)时魔芋产量最高,为2124.12 kg/667 m^(2),较对照增产19.85%,显著高于T1处理,极显著高于对照。To deepen research on weeds eco-control technology,we carried out weeds control technology of sowing Fagopyrum esculentum once,and analyzed effect of F.esculentum in relay intercropping with different densities on weed control and growth of Amorphophallus konjac in Weining County in 2022.In this work,a field plot experiment was set up with the following treatments:five F.esculentum sowing densities of 3.5,7.0,10.5,14.0,17.5 kg/667 m^(2) and one check(CK)of chemical weed control and sowing F.esculentum free.The results showed that F.esculentum in relay intercropping had a better effect on controlling weeds in A.konjac fields,and the trends of plant and fresh weight control effects on weeds increased as F.esculentum sowing densities increased.F.esculentum sowing densities had little effect on A.konjac emergence rate,and there were no significant difference in different treatments.With the increasing of F.esculentum sowing densities,the stem height of A.konjac increased,and diameter of its stem and leaves scattered presented the trend of firstly increased and then decreased.Weeds control technology of sowing F.esculentum could increased yield of A.konjac with the increasing rate of 4.26%-19.85%.When the sowing density of F.esculentum was 10.5 kg/667 m^(2),the yield of A.konjac was highest with 2124.12 kg/667 m^(2),which was most significantly higher of 19.85%than CK(P<0.01)and significantly higher than T1(P<0.05).

关 键 词：杂草 生态控草技术 魔芋 荞麦套种 

分 类 号：S451.241[农业科学—植物保护] S451.223S344.3