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保山市地处云南省西部,是云南省油菜主产区。近年来,随着耕作制度的改变和高产高效栽培模式的推广,油菜免耕栽培现已成为保山市油菜生产的主要栽培模式。2014年保山市油菜免耕栽培面积达30万亩,占全市油菜生产面积的60%左右。油菜免耕栽培过程中,各生育期均有草害发生,且呈逐年加重的趋势。油菜田杂草不仅与油菜争水、肥和光能,还是作物病虫害的终极寄主,常造成油菜减产。笔者根据近几年的田间试验观察,总结了保山市免耕油
Baoshan is located in the western part of Yunnan Province, is the main producing area of Yunnan rape. In recent years, with the change of farming system and the popularization of high-yield and high-efficiency cultivation mode, rapeseed cultivation has become the main cultivation mode of rape production in Baoshan. 2014 rapeseed tillage cultivation area of 30 acres, accounting for about 60% of the city’s rapeseed production area. During rapeseed tillage cultivation, grass pests occurred in all growth stages and showed a trend of increasing year by year. Rape field weeds competing not only with rapeseed, fertilizer and light energy, or the ultimate host of crop pests and diseases, often resulting in rapeseed production. According to the author’s field experiment in recent years, the author summarizes the no-tillage oil in Baoshan