模拟除草剂残留对下茬谷子的影响

Study on Effects of Herbicide Residues for Foxtail Millet

为探讨除草剂残留对下茬谷子的影响,开展此项试验,试验设7种生产上常用除草剂处理,随机区组设计,以常规谷子品种公矮2号为试材,于播种前模拟残留量喷施除草剂,研究不同药剂、不同药剂残留处理之下种植常规谷子对其生长发育及对产量的影响。结果表明:在生产上上一茬如喷施了烟嘧磺隆、硝磺草酮、乙草胺、烟乙莠、硝粒莠,下茬在土壤残留剂量下降为正常剂量的20%时,不可种植谷子;当喷施烟嘧磺隆、硝磺草酮、乙草胺、烟乙莠、硝粒莠5种除草剂,下茬在土壤残留剂量下降为正常剂量的10%时,不建议种植谷子;生产上喷施过乙草胺、烟乙莠、硝粒莠,在土壤残留剂量下降为正常剂量的5%时,谨慎种植谷子。

To explore the influence of herbicide residues for millet ,we carried out the test.The test set up seven kinds of commonly of herbicides, randomized block design,with regular millet varieties gongai-2 as the test material, spraying herbicide before planting,to research the influence of different kinds of herbicides, different doses of herbicides on growth and yield of millet.Results showed that, if last stubble sprayed herbicide included Nicosulfuron, mesotrione, acetochlor, smoke acetochlor and atrazine, nitrate particles of atrazine ,in the next crop,the residual dose in the soil decreased to 20% of the normal dose ,couldn＇t grow millet.When sprayed nicosulfuron, mesotrione, acetochlor, smoke acetochlor and atrazine, nitrate particles of atrazine this 5 kinds of herbicides under stubble reduced to a normal dose of 10% doses in soil ,not recommended for planting millet.After spraying acetochlor, smoke acetochlor and atrazine, nitrate particles of atrazine in soil, residual dose decreased to normal dose 5%, planting millet careful.