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研究目的研究化学除草剂在果园应用的效果,探寻适宜的化学除草剂.为进一步防除果园草害,提高劳动生产率提供依据。经过及方法 1.试验在本院进行。每小区为0.1亩,随机排列。在梨园中耕除草后,于6月7日下午施药,每小区喷药液量为20斤。当对照区杂草完全复盖后,于7月12日进行效果检查,每处理区调查一平方米。调查时
The purpose of this study is to study the application of chemical herbicides in orchards and explore suitable chemical herbicides to provide basis for further controlling orchard pests and improving labor productivity. After and method 1. The test is carried out in our hospital. Each plot of 0.1 acres, randomly arranged. Cultivation of weeds in the pear orchard, in the afternoon of June 7 pesticide application, each district spray liquid volume of 20 pounds. When the weeds in the control area were completely covered, the effect inspection was conducted on July 12, one square meter per treatment area. At the time of investigation