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为探索多种高粱在塔里木地区的适宜播期及两端极限播期,我们于1961年进行了分期播种试验.从4月1日开始,隔10天为一期,到5月31日共7期.小区面积0.4亩,植株配置60×25厘米.本年无霜230天,早霜始于10月16日,晚霜止于3月28日.试验结果如后:(一)不同播期与生育的关系:多穗高粱喜高温,在塔里木地区,5厘米地温平均达14—17℃时,播种至出苗需11—14天;20—24℃时,需7—8天:24.5—27℃时,约需6天.在5月1日前播种的各期,出苗虽较早,但苗期
In order to explore the suitable sowing date and ultimate sowing date of two kinds of sorghums in the Tarim area, we conducted staged sowing experiments in 1961. From April 1, the first 10-day period and the 5th-31st July Period. The plot area of 0.4 acres, plant configuration 60 × 25 cm.This year frost-free 230 days, early frost began on October 16, late frost stop on March 28. The results of the test as follows: (a) different sowing and fertility The relationship: the multi-spike sorghum hi high temperature, in the Tarim area, 5 centimeters average ground temperature of 14-17 ℃, sowing to the emergence of 11-14 days; 20-24 ℃, the need for 7-8 days: 24.5-27 ℃ , About 6 days before the May 1 sowing of the period, the emergence is earlier, but the seedling stage