智能机械减量施用苯磺隆对播娘蒿防治效果及对小麦安全性

通过在田间条件下进行两因素裂区试验,研究了3种不同施药机——智能防飘、智能普通和常规施药机在推荐剂量和减量20%条件下施用苯磺隆对冬小麦田间杂草播娘蒿的防治效果和对小麦的安全性。结果表明:施药机种类和施药剂量及其二者的交互作用均未对播娘蒿的防治效果和对小麦的营养生长产生显著影响;施药机种类因素对小麦产量产生了显著影响,智能机械施药处理小麦产量显著高于常规施药机处理;而除草剂剂量因素对小麦产量的影响并不显著。可见,智能施药机在降低20%的除草剂使用量条件下可以达到与常规施药机相当的除草效果,而且对小麦的增产效果更优。该研究结果有助于推动我国农田杂草化学防治中智能机械在除草剂减量使用中的大规模应用。

Control efficacy against Descurainia sophia and winter wheat safety oftribenuron-methyl applied by intelligent machine at reduced dose

Field experiment with two-factorial split plots design was conducted to detect the efficacy on Descurainia sophia L. and winter wheat safety of tribenuron-methyl applied by three different application machines at reduced dose, including intelligent anti-drift machine, the intelligent traditional machine, and the traditional machine. The results indicated that the factor of application machine, herbicide, and their interaction had no significant effect on the control efficacy against D. sophia and on winter wheat growth. The factor of application machine had a significant effect on wheat yield, and the wheat yield under two intelligent machine treatments was significantly higher than under the traditional machine treatment. The factor of herbicide dose had no significant on winter wheat yield. These results showed that the application of tribenuron-methyl by intelligent machine at reduced dose could achieve a similar weed control efficacy and higher crop yield compared with the application by the traditional machine. The study is helpful for boosting the mechanical herbicide application at reduced dose in agriculture.