莠去津残留对玉米/苜蓿轮作体系中紫花苜蓿的毒害研究  

Toxicity of Atrazine Residue to Alfalfa in Maize/Alfalfa Rotation System

作　　者：卢家顶 张晓霞 姚晋 朱晓艳[1,3,4] 崔亚垒 史莹华 王成章[1,3,4] 孙浩 李德锋[1,3,4] LU Jiading;ZHANG Xiaoxia;YAO Jin;ZHU Xiaoyan;CUI Yalei;SHI Yinghua;WANG Chengzhang;SUN Hao;LI Defeng(College of Animal Science and Technology,Henan Agricultural University,Zhengzhou 450046,China;Forage and Feed Station of Henan Province,Zhengzhou 450008,China;Henan Forage Engineering Technology Research Center,Zhengzhou 450046,China;The Key Laboratory of Innovation and Utilization of Grassland Resources in Henan Province,Zhengzhou 450046,China)

机构地区：[1]河南农业大学动物科技学院,河南郑州450046 [2]河南省畜牧局饲草饲料站,河南郑州450008 [3]河南省草地资源创新与利用重点实验室,河南郑州450046 [4]河南省牧草工程技术研究中心,河南郑州450046

出　　处：《中国草地学报》2023年第10期98-106,共9页Chinese Journal of Grassland

基　　金：国家自然科学基金项目(32001393);国家现代农业产业技术体系(CARS-34);河南省科技攻关联合基金项目(222103810006)资助。

摘　　要：为研究河南地区玉米田喷施莠去津除草剂对后茬紫花苜蓿生产的影响,选取我国广泛种植的20个紫花苜蓿品种进行受害指数、生产性能和干草品质比较,结果表明:(1)玉米田后茬紫花苜蓿根际土壤莠去津残留量受降雨影响较大,因前茬作物玉米生长期间强降雨的淋溶作用,2021年秋季种植的苜蓿土壤中未检出莠去津残留。(2)在河南地区正常降雨年份,以夏玉米推荐浓度(3.75 l/hm^(2))喷施莠去津,残留量对后茬紫花苜蓿产生明显毒害作用,但不同苜蓿品种受害程度有所不同。(3)紫花苜蓿遭受莠去津毒害时,植株高度和生物产量明显下降。In order to study the effect of spraying atrazine herbicide on the production of subsequent alfalfa in maize fields in Henan Province,20 widely planted alfalfa varieties in China were selected to com‑pare the damage index,production performance and hay quality.The results showed that:(1)The residual amount of atrazine in the rhizosphere soil of subsequent alfalfa in maize fields was greatly affected by rainfall,due to the leaching effect of heavy rainfall during the growth period of previous crop maize,no atrazine residue was detected in the alfalfa-planted soil in the autumn of 2021.(2)In normal rainfall years in Henan Province,spraying atrazine at the recommended concentration of 3.75 l/hm^(2) for summer maize resulted in a significant toxic effect on subsequent alfalfa,but the degree of damage varied among different alfalfa varieties.(3)When alfalfa was poisoned by atrazine,its plant height and biomass significantly decreased.

关 键 词：莠去津 品种 紫花苜蓿 产量 农药残留 

分 类 号：S541.1[农业科学—作物学]