氮肥运筹方式对抛栽杂交水稻穗部性状、抗倒性能及产量的影响  

Effects of Nitrogen Regulation on Panicle Traits,Lodging Resistance and Yield of Hybrid Rice Seeding-throwing Culture

作　　者：杨安中[1] 朱启升[2] 张德文[2] 段素梅[1] 王士梅[2] 

机构地区：[1]安徽科技学院植物科学学院,安徽凤阳233100 [2]安徽省农业科学院水稻研究所,安徽合肥230031

出　　处：《安徽科技学院学报》2011年第2期14-17,共4页Journal of Anhui Science and Technology University

基　　金：安徽省十一五重大攻关项目(09010301020);安徽科技学院重点学科项目(AKXK20101-1);蚌埠市科技计划项目(BB201005);安徽省教育厅优秀青年基金项目(2010SQRL096)

摘　　要：在总施氮(尿素)量600 kg/hm2条件下,研究了氮肥运筹方式对抛栽杂交水稻穗部性状、抗倒性能及产量的影响。结果表明:在氮肥总量相同的情况下,减少基肥、增加分蘖肥用量能增加有效穗数;减少基、蘖肥增加孕穗肥用量使穗长、一次分枝数、二次分枝及穗粒数增加,但抗倒性能下降;减少基、蘖肥增加粒肥往往会导致减产。各处理中,以基肥:分蘖肥:孕穗肥:粒肥为3:2:1:0的处理产量最高,达到11526kg/hm2,较对照增产20.43%,达极显著水平。因此,抛栽杂交水稻氮肥施用基肥:分蘖肥:孕穗肥:粒肥以3:2:1:0为宜。Effects of nitrogen application models on panicle traits,lodging resistance and yield of hybrid rice seeding-throwing culture were studied under the total nitrogen fertilizer（600 kg/hm2）.The results showed that effective panicle number increased along with the ratio of basal fertilizer decreasing and tillering fertilizer increasing.Panicle length,primary branches and secondary branches increased,however,lodging resistance decreased along with the ratio of basal fertilizer and tillering fertilizer decreasing.Low ratio of basal and tillering fertilizer to spikelet fertilizer resulted in yield dropped.The treatment of basal,tillering,booting and spikelet fertilizer as 3：2：1：0 had the highest yield reached 11526 kg/hm2,and 20.43% higher than the control.Therefore,the appropriate nitrogen fertilizer ratio of basal,tillering,booting and spikelet fertilizer were 3：2：1：0 for hybrid rice seeding broadcasting

关 键 词：氮肥运筹 水稻抛栽 穗部性状 抗倒性能 产量 

分 类 号：S511.606.2[农业科学—作物学]