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本文据1992～1995年试验结果,以Logistic方程拟合贵州高原不同夏秋麦品种的籽粒灌浆过程并计算出有关籽粒灌浆参数,发现不同夏秋小麦品种灌浆特性有所不同.通径分析灌浆参数与千粒重的关系表明,籽粒平均灌浆速率和最大灌浆速率是影响夏秋麦千粒重的两个主要因素.且两因素间有极显著正相关.进一步分析发现,缓增期和渐增期日数以及快增期灌浆速率对千粒重作用显著;缓增期日数与渐增期日数间有极显著负相关,快增期灌浆速率与平均灌浆速率、最大灌浆速率之间有极显著正相关.因此,生产中选用渐增期短,缓增期长,高灌浆速率的品种,配合适宜的栽培技术,是提高夏秋麦粒重的关键.
Based on the results from 1992 to 1995, Logistic equation was used to fit the grain-filling process of different summer-autumn wheat cultivars in Guizhou Plateau and to calculate the grain-filling parameters. The grain-filling characteristics of different summer and autumn wheat varieties were found to be different. The results showed that grain filling rate and grain filling rate were the two main factors that affect the 1000-grain weight of summer and autumn wheat grains, and there was a significant positive correlation between the two factors.Further analysis found that both the increasing and increasing days, The effect of grain weight on grain weight was significant. There was a significant negative correlation between the number of days of increasing period and days of increasing number. There was a significant positive correlation between the filling rate and the average filling rate and the maximum filling rate during fast growing period. Therefore, The short period, slowly increasing period, high filling rate varieties, with appropriate cultivation techniques, is to improve the key summer wheat grain weight.