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采用人工控制光照法,对南自21°13′N 的广东省高州县,北到50°15′N 的黑龙江省爱辉县的24个品种进行了光照处理的试验,结果表明,大豆品种在出苗至开花日数和生育期与大豆品种的地理纬度、品种类型有关。经长光照处理的大豆品种,其生育日数随纬度的降低而增加,并且与品种出苗至开花日数呈正相关(r=0.9720)。植株高度、主茎节数和分支数与光照时数呈正相关,相关系数分别为0.9828(达到5%显著水准)和0.9436。在所有光照处理下,凡能正常成熟的大豆品种,其产量最高的处理是自然日照。
The artificial lighting was used to test the light treatment of 24 cultivars south of 21 ° 13’N in Gaozhou County and 50 ° 15’N in Aihui County, Heilongjiang Province. The results showed that the soybean varieties The number of days from emergence to flowering and growth period are related to the geographical latitude and varieties of soybean varieties. Soybean varieties treated with long photoperiod increased their fertility days with decreasing latitude, and were positively correlated with the number of blooming days (r = 0.9720). Plant height, number of stem nodes and branches were positively correlated with light hours, with correlation coefficients of 0.9828 (reaching 5% significance level) and 0.9436. Under all light treatments, the highest-yielding treatment of a naturally ripe soybean cultivar is natural sunlight.