拔节孕穗期水分胁迫对水稻生长发育及产量的影响  

Effects of Water Stress on Growth and Yield of Rice in Jointing-Booting Stage

作　　者：邵玺文[1] 张瑞珍[2] 齐春艳[1] 童淑媛[1] 杨沫[1] 黄世琳[3] 孙长占[1] 

机构地区：[1]吉林农业大学农学院,长春130118 [2]四川省草原工作总站,成都610041 [3]松原市气象局,松原138000

出　　处：《吉林农业大学学报》2004年第3期237-241,共5页Journal of Jilin Agricultural University

基　　金：长春市农业创新计划项目(长科合字第01-052N12号)

摘　　要：试验研究了拔节孕穗期水分胁迫对水稻生长发育及产量的影响。结果表明:拔节孕穗期水分胁迫对水稻有效穗、叶面积指数和株高都有较大的影响,影响的严重程度与水分胁迫水平一致,水分胁迫处理有效穗平均比对照低26 7%。由于拔节孕穗期水分胁迫抑制了水稻的生长发育,影响了水稻分蘖穗的形成,最终导致单位面积有效穗不足、穗粒数少、千粒重低而严重影响水稻经济产量水分胁迫。处理平均产量比对照低63 8%,水份胁迫处理平均生物产量比对照低25 9%,水分胁迫处理平均茎、叶重比对照高8 3%。Effects of water stress on growth and yield of rice were studied in jointing-booting stage. It showed that effects of water stress on effective panicles, LAI, and plant height of rice were evident. The degrees of rice being affected were positively coorelated with the levels of water stress. The effective panicles of the treated were 26.7% lower than those of the control. Owing to water stress on rice in jointing-booting stage, the rice tillering panicles was restrained, the yield was seriously affected because there were not enough effective panicles in unit area, and fewer of the grains per panicle and light of (1 000-)grain weight. The average yield of the treated was 63.8% lower than that of the control. The average biomass of the treated was 25.9% lower than that of the control. The average stem and leaf weight of the treated were 8.3% higher than those of the control.

关 键 词：水稻 拔节孕穗期 水分胁迫 产量性状 产量 

分 类 号：S511.048[农业科学—作物学]