杂交早稻旱育秧生育特性及产量形成规律研究Ⅰ旱育秧的吸氮特性和群体建成对产量的影响  

Effect of N uptake characteristics and populational formation on the yield of dry seeded hybrid rice

作　　者：杨德光[1] 段志红[2] 蔡明历 刘承柳 吴山[4] 

机构地区：[1]解放军农牧大学农学农机系,长春130062 [2]湖北省农业厅 [3]华中农业大学农学系 [4]湖北省襄樊市农业局粮油科

出　　处：《湖北农业科学》2000年第4期5-7,共3页Hubei Agricultural Sciences

基　　金：长江流域早杂协作组下达项目

摘　　要：研究了早杂旱育秧吸氮特性、群体建成和对产量的影响 ,结果表明 :旱育秧全生育期单株吸氮量均高于水育秧 ,在分蘖期叶片含氮率占全株的 71 9% ;分蘖发生多 ,群体发展迅速 ,在常规栽培条件下 ,其最大叶面积指数接近 7 0 ;旱育秧的实际产量略高于水育秧。讨论了旱育秧进一步高产应注意的问题。The effect of N uptake characteristics,population formation on the yield of the dry seeded hybrid early rice were investigated.The results indicated that N uptake per plant was more than that of the paddy seeded in all the growth stages,especially in tillering stage.Leaf N content of dry seeded rice was 72% and it has more tillers.Its population formation was faster and maximum LAI was close to 7 0 under the common cultural condition.But its yield was only slightly higher over paddy seeded rice.In addition,some factors which affect high yield was also discussed in this paper.

关 键 词：杂交早稻 旱育秧 吸氮特性 产量 生育特性 

分 类 号：S511.01[农业科学—作物学]