摘要
Adjuvants have the potential to improve the weed control efficacy of herbicides. The synergistic effects of different types of adjuvants on clomazone and the safety of soybean were studied systematically by bioassay, instrumental analysis and field trial methods. The results showed that the five different types of adjuvants all differentially enhanced the herbicidal effects of clomazone;the compound adjuvant had the best synergistic effect on clomazone, and the plant control effect and the fresh weight control effect of clomazone on weeds could be increased by 24.2% and 24.11%, respectively. Through the study of the physical properties of the solution, the results showed that the adjuvants reduced the surface tension by 15.66%-33.23%, increased the expansion diameter by 11.56%-63.19%, reduced the contact angle by 8.40%-71.49%, and shortened the drying time by 3.1%-37.75%. Among the adjuvant options, the compound adjuvant exhibited the best effect, reducing the surface tension by 26.03%-33.23%, increasing the expansion diameter by 39.81%-63.19%, reducing the contact angle by 33.22%-71.49%, and shortening the drying time by 28.85%-37.75%. All the adjuvants had no significant effect on soybean plant height and yield and were safe for soybean. The reasonable development and application of adjuvants in China’s agricultural practices had good practical basis and significant value.
基金
Research and Demonstration on Comprehensive Technology of Pesticide Reduction Application (GA19B104-1)。
