当前,我省种植大豆总是出苗数大于适宜密度。为了保证密度合理、株距相等和植株田间配置得当,一定要进行手间苗。间苗过早,可能因苗期害虫为害而造成缺苗;间苗太晚,则可能带来养分的不必要消耗,且会因根系下扎不易拔出。当豆苗的第一对真叶展开、第二片复叶即将展开的时候进行间苗较为适宜。 At present, the planting of soybean in our province is always more than the appropriate density of emergence. In order to ensure a reasonable density, plant spacing and plant field properly configured, we must carry out hand seedlings. Miao Miao premature, may be due to seedling pests caused by lack of seedlings; Miao Miao too late, it may bring unnecessary consumption of nutrients, and will not easily pull out under the root system tie. When the first pair of bean sprouts real leaves unfold, the second compound leaves about to start when the thinning is more appropriate.