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一、选择早熟品种夏大豆生长季节有限,选用适宜的早熟品种是高产稳产的前提。品种熟期过晚,易受早霜危害,不能正常成熟,且影响冬小麦适期播种。熟期过早,浪费光能与积温,达不到高产目的。通过近几年试验,适合睢县种植的大豆品种有商豆6号、商豆14等。二、适时早播早播是夏大豆获得高产的关键措施。在适宜播种期内,越早播,产量越高。夏大豆早播增产的原因如下:1.早播使营养生长时间增长,使绿色光合面积加大。播种早可延长生育天数,延长出苗至始花的
First, the choice of early maturing varieties of summer soybean growth season is limited, the choice of suitable precocious varieties is the premise of high and stable yield. Varieties mature late, vulnerable to early frost damage, can not be normal maturity, and affect winter wheat sowing. Early maturity, a waste of light energy and accumulated temperature, not up to high yield purposes. Through trials in recent years, suitable for planting Pixian soybean varieties Shang 6, Shang beans 14 and so on. Second, timely sowing early sowing is the key measure to obtain high yield soybean. In the appropriate sowing period, the sooner sown, the higher the yield. The reason for the early sowing and yield increasing of summer soybean is as follows: 1. Early sowing makes the time of vegetative growth increase, which makes the area of green photosynthesis increase. Seeding early to extend the number of days of fertility, to extend the emergence of the beginning of flowers