摘要
基于乙草胺浓度和土壤湿度对玉米芽长的抑制作用,研究两者的互作关系,评价其对玉米安全性的影响,为生产提供科学的指导。利用二次正交旋转组合设计,以对玉米生长抑制率为目标函数,建立数学模型,测定乙草胺浓度和土壤湿度对玉米芽长的抑制作用。结果表明,乙草胺浓度对玉米生长的抑制作用较土壤湿度更显著;当土壤湿度不变时,乙草胺随浓度增大对玉米芽长抑制作用增强,并产生不同程度的药害;当乙草胺浓度不变时,土壤湿度在20%~50%时,玉米能够正常生长,土壤湿度在70%~90%时,随土壤湿度增加玉米生长发育受到抑制;通过技术模拟寻优,要使对玉米芽长抑制率控制在50%以下,乙草胺浓度及土壤湿度分别小于1.16μg/cm^(2)、39.39%。通过调节土壤湿度,可以降低乙草胺的使用浓度,达到玉米安全生产。
Based on the inhibition effect of acetochlor concentration and soil moisture on maize bud growth,the interaction between them was studied,and the influence on maize safety was evaluated,so as to provide scientific guidance for production.Using quadratic orthogonal rotation combination design,a mathematical model was established to determine the inhibitory effect of acetochlor concentration and soil moisture on maize bud growth with the inhibition rate of maize growth as the objective function.The inhibitory effect of acetochlor concentration on maize growth was more significant than that of soil moisture.When the soil moisture was constant,the inhibitory effect of acetochlor on corn bud length was enhanced with the increase of concentration,and the drug damage was caused to different degrees.When the concentration of acetochlor remained unchanged,the corn could grow normally in the range of 20%-50%soil moisture,and the corn bud growth was inhibited with the increase of soil moisture in the range of 70%-90%.Through technical simulation optimization,the inhibition rate of corn bud growth should be controlled below 50%,the concentration of acetochlor and soil moisture should be less than 1.16μg/cm^(2) and 39.39%,respectively.By adjusting soil moisture,the concentration of acetochlor can be reduced,and the safe production of corn can be achieved.
作者
柴军发
张怡
CHAI Jun-fa;ZHANG Yi(Institute of Plant Protection,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan,Ningxia 750002)
出处
《安徽农业科学》
2025年第12期99-102,107,共5页
Journal of Anhui Agricultural Sciences
基金
宁夏农业高质量发展和生态保护科技创新示范项目(NGSB-2021-10-03)。
作者简介
柴军发(1996-),男,甘肃庆阳人,研究实习员,从事农田杂草防治研究;通信作者:张怡,研究员,从事农田杂草防治研究。
