不同水肥模式单季水稻生长特性研究  

The Growth Characteristics of Single-Cropping Rice in Different Combinations of Irrigation and Fertilization

作　　者：郑世宗[1] 卢成[1] 柯惠英[1] 

机构地区：[1]浙江省水利河口研究院,杭州310020

出　　处：《中国农村水利水电》2007年第10期34-37,共4页China Rural Water and Hydropower

基　　金：浙江省重大科技攻关项目"高效生态农业节水增效综合技术研究与应用"(2005C1207)

摘　　要：通过田间试验,对比不同灌溉模式与施肥方式的组合对单季水稻分蘖、根系生长、叶面积指数、产量和水分生产率的影响。研究表明：节水灌溉模式下（薄露灌、间歇灌）,水稻分蘖优于常规灌溉,并且3次施肥处理的最终分蘖量好于2次施肥;水稻根系长度和根毛总量均大于常规灌溉;不同灌溉模式对水稻叶面积指数影响不显著;节水灌溉加3次施肥处理的实测产量略大于常规处理,每公顷增产150～450 kg。另外,节水灌溉模式可显著提高单季水稻的水分生产率,生育期用水可减少10%～30%。　Through field experiment,we compared the influences of different combinations of irrigation and fertilization on the tiller,root growth,the leaf area index,yield,and water productivity of single-cropping rice.The aim of this study was to explore the mechanism of water conservation and yield increasing of single-cropping rice.The results show that the tiller of rice under water-saving irrigation（thin layer and dry irrigation or alternate dry and wetting） is better than conventional irrigation,and the tiller of three-split fertilization is better than that of two-split;the root length and total root hair are greater than conventional irrigation;the influence of different irrigation on the leaf area index is not significant,but the yield of water-saving irrigation and three-split fertilization is greater than conventional treatment,with yield increment of 10～30 kg/mu.Besides,water-saving irrigation can improve water productivity significantly,and save 10%～30% of irrigation water during growing stages.

关 键 词：单季水稻 节水灌溉 水肥模式 

分 类 号：S274-4[农业科学—农业水土工程]