关键词: 伊犁河谷, 非转基因抗除草剂油菜, 杂草, 适应性分析, 除草剂, 产量

Abstract:

One significant barrier to the rise in spring rape production is the competition from field weeds. To increase the weed control effect of spring rapeseed in Yili, Xinjiang, this study introduced nine non-transgenic herbicide-resistant hybrid rapeseed lines from the lower reaches of the Yangtze River in order to screen high-yield and resistant varieties suitable for planting in Yili Valley by planting adaptability experiments. The impact of applying herbicide-resistant lines on weed control in farmland was investigated. The results showed that the growth periods of the introduced resistant lines were similar to that of the CK (the locally recommended variety), with a latest delay of only two days compared to the CK. The branch height in the maturity stage of the introduced lines reached 64.0-90.4 cm, higher than the CK. The values of lines such as the number of pods, seed number per pod, and 1000-grain weight fluctuated up and down compared to the CK. The yield of DP2 reached 3368.70 kg/ha, significantly higher than that of CK, while the yield of DP4 remained the same as CK. The experiment of spraying herbicides during the seedling stage showed that the application of corresponding herbicides had an average control effect of 82.54% on broad-leaved weeds in the field, while spraying herbicides had no significant effect on the growth of introduced lines during the seedling stage. This study demonstrates that using “resistant rapeseed lines+spraying corresponding herbicides” is an effective strategy for controlling weeds in the spring rapeseed area of Ili, at the same time, high-yield resistant rapeseed line DP2 adapted to the climate of the Ili River Valley were selected.

Key words: Ili River Valley, Non-transgenic herbicide-resistant hybrid rapeseed, Weeds, Adaptability analysis, Herbicides, Yield