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棉花的适当密植,据各地反应,均有显著增产效果。1956年特布置这一试验,以探求赣北圩地最适当的植棉密度,供今后推广依据。 试验共分每亩3000、4000、5000、6000和7000株等五种不同密度处理,行株距顺序为2×1、1.5×1、1.5×0.8、1.5×0.667及1.5×0.57尺;田间采用顺序排列,重复4次,总计20个小区;小区面积为1分地。即85.7尺长、7尺宽(沟1尺宽在外)。其中除3000株的为4行区外,余均为5行区。供试品种为岱字15号。 试验地基础为冬闲地,于3月下旬耕耙了一次,播种前半个月又进行了整地作畦等工作。播种前二星期进行晒种3天后,于4月18日用55°—60℃的温水处理15分钟,再晒干;并用0.5%的西力
The appropriate density of cotton planting, according to the reaction around, have a significant increase yield. In 1956, this experiment was specially arranged to explore the most appropriate cotton density in the northern part of Jiangxi for future promotion. The test was divided into five different densities of 3000, 4000, 5000, 6000 and 7000 plants per acre. The order of the plantations was 2 × 1, 1.5 × 1, 1.5 × 0.8, 1.5 × 0.667 and 1.5 × 0.57 ft. Arranged, repeated 4 times, a total of 20 cells; cell area of 1 minute. That is 85.7 feet long, 7 feet wide (1 foot groove width outside). Except 3000 lines of which are 4 lines, all of them are 5 lines. Test varieties for Dai word on the 15th. The experimental ground for the winter fallow land, harrowed in late March once, half a month before sowing and soil preparation work. Two days before sowing, the seeds were sun-dried for 3 days and then treated with warm water at 55 ° -60 ° C for 15 minutes on April 18, followed by drying; and 0.5%