旱稻干物质生产和分配的研究

 为了探讨旱地条件下旱稻品种干物质生产和分配以及籽粒灌浆过程的特点,1986年和1987年在北京农业大学种植5个旱稻品种。用Hunt的生长分析法研究其干物质生产,结果表明旱稻品种的干物质生产和分配与水稻品种不相同。因不同生育阶段群体生长率、净同化率和光合势对旱稻品种总干重的影响不同。籽粒干物质积累过程用Logistic生长曲线拟合,符合度达极显著水平。

Studies on the Production and Partition of Dry Matter in Upland Rice

This research was conducted with the objective of probing the characteristics of the production, and partition of dry matter and grain filling process of upland rice varieties, cultivated at dryland condition in Beijing Agricultural University from 1986 to 1987, using five varieties of upland rice, by Hunt's method for analyzing dry matter production. The results showed that the production and partition of dry matter of upland rice varieties differred from rice varieties. Colony Growth Rate, Net Assimilation Rate and Leaf Area Duration influenced the total dry weight of upland rice varieties at the different stages respectively. It showed very significant level that the goodness of fit for the grain dry matter accumulation process of upland rice by fitting of Logistic Growth Curve.