大豆是一种短日照作物,其蛋白质含量可达40%,油分可达20%。与之相比,禾本科作物(如小麦、水稻等)产生的籽粒中,蛋白质含量一般只有百分之几。不过,这种高能量作物的产量比较低。而且杂草问题会极大影响大豆的产量和成本。杂草会与作物争夺土壤里的养分,影响作物的生长。因此,除了在播种前要彻底除草之外,在作物生长过程中还要数次除草。除草在农业生产中劳动强度大,用工时间较多。为了减轻劳动强度,目前人们广泛使 Soybean is a short-day crop with up to 40% protein and up to 20% oil. In contrast, grains from grasses (such as wheat, rice, etc.) typically have only a few percent protein. However, the production of such high-energy crops is relatively low. And the problem of weeds will greatly affect the yield and cost of soybeans. Weeds compete with crops for nutrients in the soil, affecting crop growth. Therefore, in addition to being thoroughly weed-out before sowing, weeding is also required several times during crop growth. Weeding in the agricultural labor intensity, employment more time. In order to reduce labor intensity, people are widely used at present