若干气象因素对菜用大豆产量的效应
Effect of Some Meteorological Factors on the yield of Vegetable Soybeen
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摘要: 以1994年分期播种试验资料,分析积温、累计日照时数、累计降雨量和日平均温度对菜用大豆产量的效应。结果表明:菜用大豆产量及主要经济性状受气象因素的影响较大,生育期、尤其是生育前期(出苗至第一朵花)受积温的影响最大,各生育阶段影响产量的主导因素是不同的,结荚期主导因素是日照,鼓粒期是雨量,成熟期是日平均温度。当结荚期累计日照时数在90h以上、鼓粒期累计雨量在91mm、成熟期日平均温度在27℃时产量最高。Abstract: The effect of accumulative temperature, sunshining duration, rainfall and diurnal average temperature on the yield of vegetable soybean were analysed with the experiments in different sowing periods in 1994.The results showed that the yield and main economic characters of veg-etable soybean were largely influenced by meteological factors during the growth stages, especially early stages(from seedling emergence to first flowering)were mainly effected by accumulative temperature.The dominant factor affecting the yield was different in various growth stages,i.e.the duration of sunshining in pod-setting stage, rainfall in pod-filling stage and average diurnal temperature in maturing stage.The yield arrived the highest level when there were more than 90 hrs of sunshining duration in pod-setting stage, 91 mm rainfall in pod-filling stage and 27℃ of di-urnal average temperature in maturing stage.
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Key words:
- Vegetable soybean /
- Meteorological factors /
- yield
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