化学调控对寒地水稻抗倒及产量性状的效应研究  

Effects of Chemical Regulation on Lodging and Yield Traits of Rice in Cold Region

作　　者：萧长亮[1] 解保胜[1] 赵姝[2] 沈巧梅[1] 孙桂芳[1] 赵泽松[1] 杜海香 

机构地区：[1]黑龙江省农垦科学院水稻研究所,黑龙江佳木斯154007 [2]黑龙江农业职业技术学院,黑龙江佳木斯154007 [3]黑龙江省哈尔滨市巴彦县气象局,黑龙江哈尔滨151800

出　　处：《作物杂志》2011年第6期68-72,共5页Crops

摘　　要：以易倒伏水稻品种垦稻12为试验材料,设置600g/hm2、900g/hm2、1 200g/hm2、1 500g/hm2 4个调节剂水平,研究不同调节剂用量对水稻抗倒伏能力及产量性状的影响。结果表明:调节剂处理水稻的株高降低,节伸长受到抑制,茎秆抗折力增加,弯曲力矩减小,倒伏指数减小。与对照相比,化学调控有效降低了水稻倒伏的发生几率。调节剂处理可促进水稻分蘖,收获穗数的增加补偿了千粒重降低的负效应,在600g/hm2处理水平下,寒地水稻收获穗数增加明显,结实率有增加趋势,水稻产量比对照增加显著。900g/hm2、1 200g/hm2处理水平下水稻产量增加不明显,在1 500g/hm2处理水平下产量比对照降低。Effects of chemical regulation on lodging and yield at four chemical regulating levels were studied using ＂Kendao12＂ as materials.The results showed that the plant height was shortened,elongation of stem was restrained,the breaking-resistant strength of stem was increased,and bending moment and lodging index was decreased by chemical regulation.Compared with the control,chemical control effectively reduced the probability of the occurrence of rice lodging.The increase of panicle number harvested compensated negative effects of 1000-grain weight Since panicle number of rice in the cold region increased significantly.Seed setting rate had increasing tendency and rice yield increased significantly compared with the control under chemical regulation of 600g/hm2.The rice yield increased insignificantly at 900g/hm2 and 1200g/hm2 treatment level.At 1500g/hm2 treatment level,the rice yield decreased.

关 键 词：水稻 寒地 倒伏 化学调控 产量性状 

分 类 号：S511[农业科学—作物学]