覆膜条件下不同施N量对水稻‘两优6326’生理指标的影响  

The Effect About Physiological Index of‘Liangyou6326’with Different N Application Rate Under the Condition of Film Mulching

作　　者：刘祥臣 乔利 刘春增[2] 卢兆成 赵海英 李继红 范学军 郑宝同 

机构地区：[1]信阳农业科学研究所,河南信阳464000 [2]河南省农科院,郑州450002 [3]固始县城郊乡农村经济发展中心,河南信阳465200

出　　处：《中国农学通报》2012年第9期33-37,共5页Chinese Agricultural Science Bulletin

基　　金：公益性行业(农业)科研专项"绿肥作物生产与利用技术集成研究及示范经费项目"(201103005-06)

摘　　要：为了获取在覆膜条件下的一次性最佳施N量,通过采用5种不同施N量处理种植水稻‘两优6326’,对不同时期的光合速率、叶绿素含量及分蘖、叶龄等生理指标,以及最终产量和投效比给以分析。结果表明:覆膜条件下,单株最多总叶片数为15片,每穴分蘖数可达45个,最大叶绿素含量(SPAD值)是49.28,在施纯N 300 kg/hm2的情况下,最高产量可达10280.4 kg/hm2。经投效比分析,覆膜条件下高产经济的最佳施N量为施纯N 225 kg/hm2,其产量为10172.25 kg/hm2。In the experiment,five different designs about N application rate were studied of disposable in order to obtain the best one.Photo out,chlorophyll content,the tillers,foliar age and etc.were analyzed under different stage.The results showed that,the most number of leaf was 15,and the maximum of the tillers was 45 per point.At the same time,the maximum chlorophyll content was 49.28.10280.4 kg/hm2 was bigger yield under 300 kg/hm2.The analysis of economic benefit showed that,225 kg/hm2 was the best N application rate under the condition of film mulching,and 10172.25 kg/hm2was the best yield.

关 键 词：覆膜 施N量' 两优6326’ 生理指标 

分 类 号：S511[农业科学—作物学]