膜下滴灌旱种水稻适应品种及其评价指标的筛选

Screening of Upland Rice Varieties with Good Adaptability of Mulch Drip Irrigation and its Evaluation Indexes

为筛选适宜寒地膜下滴灌旱种的水稻品种,明确膜下滴灌旱种水稻农艺性状及品质性状适应性评价指标,以94份寒地早粳稻为材料,采用随机区组试验设计,利用膜下滴灌旱种适应性系数、膜下滴灌旱种适应性指数和综合适应能力,结合主成分分析方法对水稻旱种适应性进行综合评价。结果表明:长白15号、长白17号、吉旱1号和农大1025在膜下滴灌旱种适应性系数、膜下滴灌旱种适应性指数和综合适应能力上均表现为中度或高度适应。水稻农艺性状和品质性状对膜下滴灌旱种适应性反应指数综合评价表明,理论产量、穗数、经济系数、成粒率和千粒重5个因子可作为膜下滴灌旱种水稻农艺性状适应性评价指标,精米粒长、精米率、精米长宽比、蛋白质含量和粗脂肪含量5个因子可作为膜下滴灌旱种水稻品质性状适应性评价指标。

The adaptability of 94 upland japonica rice varieties was evaluated by using mulch drip irrigation adaptation coefficient,mulch drip irrigation adaptation index,integrated adaptive capacity and principal component analysis based on the randomized block design to screen upland rice varieties with the good adaptability of mulch drip irrigation and discuss the adaptability evaluation indexes for agronomic and quality characters of upland rice under the mulch drip irrigation condition.Results：The mulch drip irrigation adaptation coefficient,mulch drip irrigation adaptation index and integrated adaptive capacity of Changbai 15,Changbai 17,Jihan 1and Nongda 1025 performance moderate or higher level.The integrated evaluation of agronomic and quality characters to mulch drip irrigation adaptability response indexes shows that 5factors of theoretical yield,panicles,economic coefficient,setting percentage and 1000-grain weight can be used as the evaluation indexes of agronomic characters＇ adaptability in upland rice under the mulch drip irrigation condition and 5factors of milled rice length,milled rice rate,length/width ratio of milled rice,protein content and crude fat content can be used as the evaluation indexes of quality characters＇ adaptability in upland rice under the mulch drip irrigation condition.