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二甲四氯主要用于防治禾谷类作物田中的莎草科杂草和其它阔叶杂草。我们在实践中发现,夏季用于水稻防治杂草效果好,但在冬季低温条件下,用于防治小麦杂草效果很差。为了提高二甲四氯在冬季低温条件下防治小麦杂草的效果,我们于一九八一—一九八三年开展了二甲四氯配合敌草隆防治小麦杂草的试验、示范工作,通过三年实践证明,在冬季低温条件下,二甲四氯配合敌草隆防治小麦杂草效果好,对麦苗安全,施药方法简单,不受连续多日阴天日照少的影响。据一九八三年多点试验防治杂草效果达百分之
MCPA is mainly used for controlling sedge weeds and other broad-leaved weeds in the field of cereal crops. In practice, we found that weeds are good for controlling weeds in rice in summer, but weeds are very poor for controlling weeds in winter under low temperature conditions. In order to enhance the effectiveness of MCPA against weeds in winter at low temperatures, we carried out experiments and demonstrations on the control of wheat weeds with MCPA and Diuron in 1981-83. After three years of practice, it has been proved that under the condition of low temperature in winter, the effect of DMTC and Diuron against weeds in wheat is good, and the safety of wheat seedlings and the application method are simple and not affected by the less cloudy sunshine for many consecutive days. According to the 1983 multi-point test weed control effect of up to one percent