浙江省早籼稻区试品种（系）碾磨品质研究

本文对水稻区域试验中多品种（系）、多年、非平衡、无重复分析值的品质性状资料提出相应的统计分析方法，并对早籼稻区试品种（系）碾磨品质作了统计分析．分析结果表明，91—94年期间参试的早籼稻品种（系）其糙米率、精米率较“七五”期间参试的品种（系）有显著提高，金89—1、中选2号、浙733品种（系）的糙米率、精米率都显著或极显著的高于对照品种．三个碾磨品质中整精米率的方差较大，且变异主要来自于品种×年份的交互作用．

STUDIES ON MILLING QUALITIES OF EARLY SEASON INDICA RICE LINES IN REGIONAL TRIALS OF ZHEJIANG PROVINCE

A statistic method was established for analysis of data pertaining to quality characters from rice regional trial,which are ofDten derived from multilines,unbalanced, unreplicated and multiyears trials. By using the present method,the milling qualities of the early season rice varieties (lines)in regional trails of Zhejiang Province were evaluated.The results show that the brown rice rate and milled rice recovery of the early season Indica rice varieties(lines)tested in the trails during 1990-1994 were markedly improved when compared with those in the trails during the seventh five-year planning period (1986-1990).Among the rice tested,Jing 89-1,Zhongxuan 2 and Zhe 733 had significantly higher brown rice rate and milled rice recovery than the control.However,head milled rice recovery,among the three milling quality characters,had biggest variance,which mainly attributed by interaction between variety and year.