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Position: Home > Articles > N,P,K Absorption Characteristics of Upland Rice under Different Mulching Modes Crop Research 2012,26 (6) 623-626

不同覆盖方式下旱植水稻N、P、K吸收特性研究

作  者:
卓儒洞;张玉烛;刘洋
单  位:
吉首大学城乡规划学院;湖南省水稻研究所
关键词:
旱作水稻;栽培;覆盖;营养元素;吸收
摘  要:
以品种P88S/1128为材料,设置地膜覆盖、稻草覆盖和液体膜覆盖3个处理,以裸地为对照,研究了不同覆盖方式对旱作水稻N、P、K吸收特性的影响。结果表明,覆盖方式对旱作水稻N、P、K吸收特性有明显影响,稻草覆盖栽培有效提高了分蘖期植株对N素营养的吸收,为大群体的建立打下基础;成熟期茎秆和叶片中P素含量都降至最低,稻穗P素含量显著提高,其中以稻草覆盖处理最高,达3.70 g/kg,液膜覆盖处理次之,不覆膜最低;成熟期稻穗K素含量在成熟期降至最低,仅为2.40~3.08 g/kg,4种处理间差异不明显。从不同栽培模式比较来看,地膜、稻草、液膜覆盖处理对N、P、K营养元素的吸收量都显著高于不覆膜对照,表明覆盖栽培增强了旱植水稻对营养元素的吸收能力,其中以地膜覆盖处理最为明显。
译  名:
N,P,K Absorption Characteristics of Upland Rice under Different Mulching Modes
作  者:
ZHUO Ru-dong1,ZHANG Yu-zhu2,LIU Yang2(1 Urban and Rural Planning Institute,Jishou University,Zhangjiajie,Hunan 427000,China; 2 Hunan Rice Research Institute,Changsha,Hunan 410125,China)
关键词:
Upland rice;Cultivation;Mulching;Nutrient element;Absorption
摘  要:
The effect of coverage mode on N,P,K absorption characteristics of upland rice were studied by using P88S/1128 as material under three coverage cultivation treatments and bare cultivation(control).The result showed that mulching have a significant effect on N,P,K absorption characteristics of upland rice.Straw mulching promoted absorption of N on the tillering stage,and the content of P on spike was the highest,arrived at 3.70 g/kg.The content of K on spike reduced to minimum at mature period,only 2.40~3.08 g/kg,there were no significant difference between the treatments.At the same time,comparing with bare cultivation,mulching cultivation enhanced the absorption ability for nutrient elements,the effect of plastic film mulching was most obvious.

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