北方旱作水稻研究现状及发展前景

Current Status and Prospects of Upland Rice Research in the North

阐述了我国北方旱稻研究现状,分析了旱作条件下水稻生物学性状、生理生化变化规律及旱作水稻产量及其构成因素与其它性状、品质与其它性状的相关关系,指出产量的提高与品质的改良并不存在矛盾,育种工作者完全可以培育出集高产、优质于一身的旱稻品种。评价了旱作水稻各抗旱性鉴定指标,指出综合抗旱力指数K值法作为一种鉴定水稻品种的综合抗旱能力研究方法较为客观、准确,且易于掌握利用。并从旱作水稻研究现状、生产实际出发,结合我国北方气候特点、水资源情况,分析了我国北方发展旱稻的可行性及其广阔的发展前景。

The current status of upland research in the north of China was elaborated and the biological characters, physiological and chemical change principle and the relationship between yield, yield components and other traits and relationship between quality and other traits were analyzed. There dose not exist contradiction between high yield and good quality and it is possible to develop upland varieties combined with high yield and fine quality. The drought resistance index is evaluated and the K-value method is considered effective to evaluate comprehensive drought resistance of rice varieties. The feasibility and prospects to develop upland rice production are analyzed according to climatic characters and water resource in the north of China.