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在大田条件下,连续2年以洛麦23为试验材料,采用随机区组试验设计,研究了3个播期和3个密度对其产量及其构成因素的影响。结果表明:不同播种日期,穗数、穗粒数和籽粒产量表现10月5日和10月15日显著高于10月25日,并分别较10月25日高5.05%和4.19%、6.71%和6.27%、15.83%和16.67%,千粒重表现10月5日高于10月15日高于10月25日,10月5日较10月15日和10月25日分别高2.76%和6.44%,10月15日较10月25日高3.58%;不同密度,穗数表现262.5 kg/hm~2和375.0 kg/hm~2显著高于150.0 kg/hm~2,并分别较150.0 kg/hm~2高3.55%和3.95%,产量表现262.5 kg/hm~2显著高于150.0 kg/hm~2和375.0 kg/hm~2,并较150.0 kg/hm~2和375.0 kg/hm~2分别高3.56%和4.54%,穗粒数和千粒重各密度间无显著差异。两因素互作下表现为穗数以10月15日播种配置262.5 kg/hm~2密度为最高,穗粒数以10月5日播种配置150.0 kg/hm~2密度为最高,千粒重以10月5日播种配置262.5 kg/hm~2密度为最高,产量以10月15日播种配置262.5 kg/hm~2能达到产量较高之目的。
Under field conditions, Luomai 23 was used as experimental material for two consecutive years, and the effects of three sowing dates and three densities on the yield and its components were studied using randomized block design. The results showed that the number of spikes, grains per spike and grain yield were significantly higher on October 5 and October 15 than on October 25 at different sowing dates, 5.05% and 4.19% and 6.71% higher than October 25 respectively, And 6.27%, 15.83% and 16.67% respectively. The performance of 1000-grain weight was higher than that of October 15, higher than October 25, October 5, higher than that of October 15 and October 25 by 6.46% And 3.58% higher than October 25 on October 15. The average density of spikes was 262.5 kg / hm ~ 2 and 375.0 kg / hm ~ 2, which was significantly higher than 150.0 kg / hm ~ 2 and was higher than 150.0 kg / hm ~ 3.5% and 3.95% respectively, and the yield of 262.5 kg / hm ~ 2 was significantly higher than that of 150.0 kg / hm ~ 2 and 375.0 kg / hm ~ 2 compared with 150.0 kg / hm ~ 2 and 375.0 kg / High 3.56% and 4.54%, there was no significant difference between the grain number per spike and the density of 1000-grain weight. Under the interaction of two factors, the spike number was the highest at the density of 262.5 kg / hm ~ 2 on October 15 and the highest at 150.0 kg / hm ~ 2 on September 5. The grain weight per spike in October The density of 262.5 kg / hm ~ 2 was the highest on the 5th, and the yield was 262.5 kg / hm ~ 2 on the 15th of October with the highest yield.