Effect of Different Seedling Age on the Growth and Yield of Double Cropping of Late Rice  

不同秧龄对双季机插晚稻生长特性与产量形成的影响（英文）

作　　者：滕飞[1] 陈惠哲[1] 曾研华[1] 蔡雪青[1] 朱德峰[1] 

机构地区：[1]中国水稻研究所水稻生物学国家重点实验室,浙江杭州310006

出　　处：《Agricultural Science & Technology》2015年第7期1385-1389,共5页农业科学与技术（英文版）

基　　金：Supported by State Science and Technology Supporting Program(2012BAD07B02);Special Program for Technological Development of Scientific Research Institute of Science and Technology Department(2013EG134237);"Three Rural and Six Party"Science and Technology Cooperation Projects of Zhejiang Province(SN201206)~~

摘　　要：The study aims to solve the problems of late transplanting rice with differ- ent seedling ages at the lower reaches of Yangtze River. We selected six varieties of different thermal and photo-response characteristics as the test material to study the effect of different seedling ages on growth and yield of rice. The results showed that growing period of thermal-response rice was delayed by long seedling age, but less affected by the impact of photo-response rice; the yield of later thermal-re- sponse varieties with 25 days and 30 days seedling ages was significantly reduced. In contrast, the yield of early thermal-response varieties and later photo-response varieties were significantly reduced with 30 days seedling age. The optimal trans- planting seedling age was 15 days of thermal-response rice, while photo-response rice was 20 days. The thermal-response rice should be selected as early maturing varieties, while the photo-response rice could be selected as late maturing varieties for high yield.为解决长江中下游地区双季机插晚稻移栽秧龄过长的问题,选取温光特性及熟期各不相同的4个代表性品种为材料,研究不同秧龄移栽对双季晚稻生长及产量的影响。结果表明,随着移栽秧龄的增大,感温性水稻穂、成熟期均明显推迟,而感光型水稻生育期受影响较小;感温性迟熟品种25 d、30 d移栽产量显著下降,而感温性中早熟及感光性迟熟品种至30 d移栽产量才发生显著下降。最佳移栽秧龄为感温性晚稻15 d左右,感光性晚稻20d左右。感温性品种作双季晚稻种植时应选用中早熟品种,而感光性品种可选用高产的中迟熟品种。

关 键 词：Double cropping of late rice Seedling age Growing period YIELD 

分 类 号：S233.71[农业科学—农业机械化工程]