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1985年和1986年,通过用V35和湘优101进行分期播种、多点联合试验,结果表明:播种期对杂交稻整精米率、垩白大小、胶稠度和糊化温度影响较大。对蛋白质和直链淀粉含量影响较小。对糙米率和精米率影响更小;6月中、下旬为杂交稻最佳品质的播种时段;品质较劣的较品质稍优的杂交组合生态改良的潜力较大;各种植地区间,稻米品质亦有差异。其中碾米、营养和蒸煮品质以郴州种植的最好。长沙种植的次之。常德种植的最差;外观品质则以长沙的最好,郴州的次之,常德的最差。绝大部分品质性状与产量无显著相关性;V35品质与产量构成存在显著二次回归关系;品质性状受抽穗结实期间的温、光因子作用显著,且影响的时段和方向不尽相同。
In 1985 and 1986, the joint sowing experiments with V35 and Xiangyou 101 were carried out. The results showed that sowing date had a great influence on the rate of head rice, chalkiness, gel consistency and gelatinization temperature. Little effect on protein and amylose content. Brown rice rate and milled rice rate were less affected. The middle and late June were the optimal sowing time for hybrid rice; the potential for ecological improvement was better in hybrids with lower quality and better quality; There are also differences. Which rice, nutrition and cooking quality to grow the best in Chenzhou. Changsha planting second. Changde planting the worst; appearance quality is the best in Changsha, followed by Chenzhou, Changde worst. Most of the quality traits had no significant correlation with the yield. There was a significant quadratic regression between the quality and the yield of V35. The quality traits were significantly affected by temperature and light factors during the heading and heading stages, and the time and direction of the effects were different.