粒用高粱发芽和籽粒成熟都需要较高的温度。故看来在四月未到七月初这一较长的时期范围内都可以播种。Ochi等人的报告指出,在日本国家农业试验站五月份播种的产量高于六月份的。他们还指出:Shimane农业试验站晚熟品种产量较高的播种时期依次是六月>五月 Grain sorghum sprouting and grain ripening both require higher temperatures. It appears therefore that sowing is possible within the longer period of April, which is not until the beginning of July. Ochi et al. Reported that the sown crop in Japan at the National Agricultural Experimental Station in May was higher than in June. They also pointed out that the higher sowing dates for late-maturing varieties at the Shimane Agricultural Experiment Station were June> May