大豆是营养丰富且经济价值较高的粮油兼用作物。提高大豆产量,不仅可以提高种植上的效益,而且可以促进农副产品加工业的发展。现根据本人的实践经验,提出以下三项增产措施: 一、大豆花期喷药要慎重。据观查与试验,大豆开花时间从上午6时开始,8—10时开花最多,约占全天的88％,下午4时以后开花很少。风天开花提早,阴雨天开花推迟。大豆开花期间对外界不良条件抵抗力较弱,此时喷药会杀伤花粉,伤害柱头,使花、荚脱落或秕粒增加,约减产10％左右。因此,大豆花期发生病虫害,非喷药不可时,一定要在下午4时以后进行,而且切忌用量过多和浓度过大。二、大豆摘心能增产。大豆摘心后分枝增多, Soybean is rich in nutrition and high economic value of grain and oil crops. Increasing the yield of soybeans will not only increase the benefits of planting, but also promote the development of the agricultural and sideline products processing industry. Now based on my own practical experience, the following three measures to increase production: First, soybean flowering spray to be careful. According to the inspection and test, the flowering time of soybean begins at 6:00 am, and it takes the largest flowering at 8-10 pm, accounting for 88% of the whole day. There are few flowering after 4 o’clock in the afternoon. Windy flowers early, rainy days bloom delayed. Soybean flowering during the poor resistance to the outside world is weak, this time spraying will kill pollen, stigma, so that flowers, pods or nausea increased, about 10% reduction. Therefore, the occurrence of pests and diseases of soybean flowering, non-spraying inevitable, we must be carried out after 4 pm, and avoid excessive dosage and concentration is too large. Second, soybean topping can increase production. After the topping of soybeans increased branches,