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在大豆苗期和初花期喷施2.5%溴氰菊酯乳油防治夏大豆害虫,测定其对大豆农艺性状和产量的影响。结果表明:齐黄34控制区株高、分枝数、有效荚数、单株粒数、单株粒重、百粒重、产量,分别比对照区显著增加9.3%、25.8%、15.8%、26.8%、33.2%、9.1%、33.0%,无效荚数显著降低18.5%,药剂处理对齐黄34其它农艺性状无显著影响;齐黄35控制区株高、分枝数、有效荚数、单株粒数、单株粒重、百粒重、产量,分别比对照区增加13.8%、10.0%、15.8%、16.9%、11.6%、6.0%、16.9%,无效荚数显著降低38.7%,药剂处理对齐黄35其它农艺性状无显著影响。
Spraying 2.5% deltamethrin EC on soybean seedling and early flowering stage to control summer soybean pest and determine its effect on agronomic characters and yield of soybean. The results showed that the plant height, number of branches, effective pods, grains per plant, grain weight per plant, grain weight per plant, and grain yield increased by 9.3%, 25.8% and 15.8% respectively in the control area of Qihuang 34, 26.8%, 33.2%, 9.1% and 33.0% respectively, and the number of invalid pods was significantly reduced by 18.5%. No significant effect was observed on the other agronomic traits in Qihuang 35 treatment. The plant height, branch number, effective pod number The number of kernels per plant, the weight per plant, the yield of 100 kernels, and the yield increased by 13.8%, 10.0%, 15.8%, 16.9%, 11.6%, 6.0%, 16.9% and 38.7% Alignment yellow 35 other agronomic traits no significant effect.