不同栽插期对水稻群体生长特征和产量的影响

Effects of Different Planting Periods on Population Growth Characteristics and Yield of Rice

为研究栽插期对水稻群体生长特征及产量等因素的影响,以迟熟中粳水稻品种“扬农稻1号”为研究对象,开展了不同栽插期比较试验,考察其生育期、叶龄进程、茎蘖动态及产量等指标。结果表明,不同栽插期水稻的全生育期差异较小,各生育阶段的叶龄进程、茎蘖动态呈现不同程度的变化;随着栽插期的推迟,667 m2有效穗数和每穗总粒数均呈下降趋势,产量也呈现下降趋势。

In order to study the effects of planting period on the population growth characteristics and yield of rice,a comparative experiment was conducted at different planting stages to investigate the growth period,leaf age progression,tiller dynamics and yield of late-ripening medium-japonica rice variety"Yangnongdao-1".The results showed that there was little difference in the whole growth period of rice in different planting stages,while the leaf age progression and the dynamics of stem and tiller showed different degrees of change in each growth stage.With the delay of planting period,the number of effective panicles and the total number of grains per panicle of 667 m2 showed a downward trend,and the yield also showed a downward trend.