不同基肥施用量对Y两优900产量的影响  

Effects of Different Base Fertilizer Application Amounts on the Yield of Y Liangyou 900

作　　者：黄新杰[1] 宾秋实[1] HUANG Xin-jie;BIN Qiu-shi(Hunan Biological and Electromechanical Polytechnic,Changsha 410127,PRC)

机构地区：[1]湖南生物机电职业技术学院,湖南长沙410127

出　　处：《湖南农业科学》2020年第10期53-54,66,共3页Hunan Agricultural Sciences

基　　金：湖南省农业农村厅农业科研计划项目。

摘　　要：以超级杂交稻Y两优900为试验材料,在湘潭、常德地区施用不同量基肥(处理1、处理2分别施45%复合肥40、50 kg/667m2),对Y两优900的农艺性状及产量进行了研究。结果表明:在湘潭和常德2个地区,孕穗期、齐穗期、成熟期和生育期的处理1和处理2均比CK推迟1 d,处理1、处理2的株高、穗长、单株干重均比CK有所增加,且均表现为处理2>处理1>CK,处理1、处理2的有效穗数、穗粒数、结实率、千粒重和理论产量均高于CK,且均表现为处理2>处理1>CK(常德2个处理的千粒重相同)。相关性分析表明,Y两优900的产量与有效穗数、结实率呈极显著正相关,与每穗总粒数呈显著正相关,与千粒重呈正相关。试验条件下施45%复合肥50 kg/667m2作基肥可以获得高产。Using a super hybrid rice variety Y Liangyou 900 as the experimental material,effects of two application amounts of base fertilizers(treatment 1 and 2:45%compound fertilizer 600 kg/hm2,750 kg/hm2)on agronomic traits and grain yield of Y Liangyou 900 were studied in Changde and Xiangtan.The results from Xiangtan and Changde showed that compared with CK,treatment 1 and 2 both had one more day of booting stage,full heading stage,maturing stage and growth period,higher plant height,ear length and dry weight per plant in the order of treatment 2>treatment 1>CK,and more effective ear number,grain number per ear,seed-setting rate and theoretical yield in the order of treatment 2>treatment 1>CK(the 1000-grain weight of treatment 1 was equal to that of treatment 2 in Changde).The correlation analyses indicate that the yield of Y Liangyou 900 has an extremely significantly positive correlation with the number of effective ears and seed-setting rate,is significantly positively correlated with total grains per ear,and is positively correlated with the 1000-grain weight.High yield will be obtained by applying 750 kg/hm2 of 45%compound fertilizer as base fertilizer under the experimental conditions.

关 键 词：基肥 超级杂交稻 Y两优900 产量 

分 类 号：S511.01[农业科学—作物学]