旱稻叶片含氮量与水分含量的定量关系  

Relationship Between Nitrogen and Water Contents at Leaves of Upland Rice

作　　者：赵全志[1] 高桐梅[1] 宁慧峰[1] 殷春渊[1] 刘胜波[1] 赵水灵[1] 

机构地区：[1]河南农业大学河南省作物生长发育调控重点实验室,河南郑州450002

出　　处：《水土保持学报》2006年第4期183-185,共3页Journal of Soil and Water Conservation

基　　金：国家"863"计划项目子专题(2002AA2Z4331-41);河南省科技攻关重点项目(0523041300

摘　　要：在池栽条件下研究了不同水分处理对早稻叶片氮素含量以及叶片组织水势、自由水和束缚水含量的影响。结果表明：在不同土壤水分条件下，植株全氮含量基本上表现为先下降而后升高再下降的变化趋势，随土壤含水量增加叶片中全氮含量逐渐减少，叶片的组织水势和自由水含量逐渐增大，束缚水含量逐渐下降。叶片氮素含量与分蘖高峰期（播种后40～46d）的组织水势呈显著负相关。叶片氮素含量（y）与叶片组织水势（z）间存在y=-0．6999x＋2．3764的显著直线回归定量关系。The characters of nitrogen content, water potential, free water and bound water in upland rice leaf were studied with pond culture experiment. The results indicated that： The variation of the nitrogen content decreased firstly and then increased and decreased again under different soil moisture. With the adding of soil water content, the nitrogen content and the bound water decreased gradually, but leaf water potential and free water content increased gradually. There is high negative significant correlation between the nitrogen content （y） and the water potential（ x ） and linear dependence relation of y = - 0. 6999x ＋ 2. 3764 after sowing 40-46 days.

关 键 词：早稻 含氮量 叶片水势 自由水 束缚水 

分 类 号：S511.6[农业科学—作物学]