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试验采用27个大豆品种,结合大豆生育期每月降水量,采用随机区组设计,研究了降水量对大豆籽粒油分含量的影响和不同类型品种油分含量与降水量的关系。结果表明,除8月份外,大豆品种油分含量与生育期各月份降水量都达到5%显著水平以上的负相关。6月份和7月份的降水对大豆油分含量形成起到了重要作用。此外,7月份降水对高油大豆品种油分形成起关键作用,而9月份降水对高蛋白和中间类型大豆品种油分形成更重要。
Twenty-seven soybean cultivars were used in this experiment. Based on the monthly rainfall during the growing period of soybean, randomized block design was used to study the effect of precipitation on the oil content of soybean seeds and the relationship between the oil content and precipitation. The results showed that, except for August, the oil content of soybean varieties had a negative correlation with the above 5% significant level of precipitation in each month of growth period. The precipitation in June and July played an important role in the formation of soybean oil content. In addition, precipitation in July played a key role in oil formation in high-oil soybean varieties, while precipitation in September was more important for oil formation in high-protein and intermediate-type soybean varieties.