Effects of Super Absorbent Polymers on Yield and Water-saving and Drought-escaping Mechanism in Spring Maize  

不同类型保水剂对春玉米节水避旱机理及产量的影响

作　　者：唐海明[1] 汤文光[1] 肖小平[1] 杨光立[1] 

机构地区：[1]湖南省土壤肥料研究所,湖南长沙410125

出　　处：《Agricultural Science & Technology》2009年第4期112-116,共5页农业科学与技术（英文版）

基　　金：Supported by Key Projects in the National Science&TechnologyPillar Program(2006BAD04B07-2);Sic-tech Innovation Projectof Hunan Academy of Agricultural Sciences(2009hnnkycx30)~~

摘　　要：The effects of super absorbent polymers （SAP） on yield as well as water-saving and drought-escaping mechanism in spring maize in the seasonal drought region were studied. As shown by the results, during the seasonal drought in southern China, SAP treatment promoted the soil moisture, improved the capability of absorption and transportation of roots, promoted physiological and biochemical functions, increased the chlorophyll content, photosynthetic rate and intercellular CO2 concentration, and reduced the stomatal conductance and transplre.tion rate. As a result, the economic characters of spring maize were improved, and the yield was increased.1材料与方法1．1试验设计试验于2007年在湖南省土壤肥料研究所试验基地进行，供试品种为中糯304，土壤为第四纪红色粘土发育的红壤，pH值为6．7，有机质含量3．68g／kg，速效氮122．35mg/kg，有效磷2．78mg／kg，速效钾128．64mg／kg。

关 键 词：Super absorbent polymer Spring maize Water-saving and drought-escaping mechanism 

分 类 号：S513[农业科学—作物学] TQ444[化学工程—化学肥料工业]