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我场有近2万亩玉米制种田,占玉米总面积的74％。由于对玉米自交系的耐药性缺乏了解,又没有有关的试验资料,故不敢盲目在制种田施行化学除草,所以玉米制种田每年有很大面积因草荒为害减产和影响种子质量。1986年,我们在场内进行了多点、多配方的常用玉米自交系耐药性试验,结果证明,玉米自交系对化学除草剂的耐药性虽不如杂交种强(尤其是Mo17耐药性较差),但只要合理施用混合药剂,同样可以取得理想的灭草效果。因此,1987年大面积推广了玉米制种田化学除草技术措施,面积达3500亩,占制种面积的17.5％,取得很理想的效果。
My field has nearly 2 million acres of corn farming, accounting for 74% of the total area of corn. Due to the lack of understanding of the resistance of maize inbred lines and the lack of relevant experimental data, it is not possible to blindly conduct chemical weeding in the field of farming. Therefore, a large area of maize farming is affected by grass shortage and the quality of seeds is affected greatly every year. In 1986, we conducted a multi-point and multi-formula common maize inbred line drug resistance test, the results show that the corn inbred lines of chemical herbicide resistance is not as good as hybrids (especially Mo17 resistance Poor sex), but as long as the rational use of mixed agents, the same can achieve the desired herbicidal effect. Therefore, in 1987, large-scale popularization of chemical weeding measures for maize farming, covering an area of 3,500 mu, accounting for 17.5% of the area under production, achieved very good results.