气象条件对广西春大豆生长发育及产量的影响

本文用1983—1985年广西春大豆区试播种资料与气象资料进行了相关统计分析。结果表明,影响广西春大豆各生育阶段生育日数的关键气象因子:播种至出苗期为土壤温度;出苗至始花期为日平均气温和降水日数;始花至成熟期为日照时数;出苗至成熟期为降水日数。影响产量的关键气象因子为始花至成熟期的温度日较差、平均相对湿度和降水量。温度日较差和降水量对广西春大豆各生育阶段生育日数的影响不显著。

EFFECT OF METEROLOGICAL FACTORS ON GROWTH DEVELOPMENT AND YIELD OF SPRING SOYBEAN

In this paper, a correlation statistical analysis was made by using the sowing data of Guangxi spring soybean Riginal Test from 1983 to L985 and the meterological data of thase three years. The result shown that the key meterological factorls which effect the growing days in each growing stage of Guangxi spring soybean are: from sowing to emergence is soil temperature, from emergence to early flowering is mean daily temperature and precipitation days, from early flowering to maturity is sunshine hours, from emergence to maturity is days of percipitation. The key meterological factors affect the yield are day and night temperature difference, mean relative humidity, and precipitation from early flowering to maturity. The effect of both the day and night temperature difference and the precipitation on the growing days in each growing stage of spring soybean are not significant.