温室番茄生态指标对隔沟灌溉水氮耦合的响应  

Ecological Indexes of Greenhouse Tomato Response to Water and Nitrogen Coupling under Ditch Irrigation

作　　者：王雪梅[1] 曹红霞[1] 胡笑涛[1] 牛云慧[1] 

机构地区：[1]西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌712100

出　　处：《节水灌溉》2012年第10期45-48,共4页Water Saving Irrigation

基　　金：水利部公益性行业科研专项(201001061);陕西省自然科学基金项目(2012JM3004);中央高校基本科研业务费专项资金(QN2011022)资助

摘　　要：为了探索温室番茄在隔沟灌溉方式下优化水氮耦合模式的理论依据,试验于2011年设置固定隔沟灌溉和交替隔沟灌溉两种灌水方式与推荐施氮量(N1)、2/3推荐施氮量(N2)两个氮素水平的耦合,研究了不同水氮耦合模式对温室番茄生态指标的影响。结果表明:氮肥是影响番茄株高、茎粗、株高与茎粗的相关性以及主要根数的主要因素;氮肥对番茄株高、茎粗的影响大于灌溉方式,而对番茄株高与茎粗相关性的影响则相反,交替隔沟灌溉具有极显著的相关性。适当的提高氮肥使用量有利于番茄的生长发育。灌溉方式与氮共同影响番茄的根茎叶的生物量分配比例,根在根茎叶生物量中所占的比例最小,茎与叶所占比例相当。In order to research theory basis for the optimal water-and-fertilization pattern of greenhouse tomato under ditch irrigation, a study was conducted on the influence of different water and nitrogen coupling modes on ecological indexes of greenhouse tomato. The experiment was conducted in 2011, the treats were conducted by the two kinds of irrigations, namely fixed furrow irrigation （FFI） and alternative furrow irrigation （AFI）, and two levels of nitrogen including recommended nitrogen （N1）, 2/3 recommended nitrogen （N2）. The results showed that nitrogen was the main reason for the influence on plant height, stem diameter, the correlation of plant height and stem diameter and the number of main roots; the influence of nitrogen fertilizer on plant height and stem diameter of tomato was greater than that of irrigation methods, which is opposite to the correlation of plant height and stem diameter which had a significant relevance under the alternate irrigation ditch. The appropriate increasing usage of nitrogen was good to the growth and development of the tomato, both the irrigation methods and nitrogen effected biomass proportion of the root, stem and leaves of tomato. The proportion of root was the smallest in thebiomass while that of stem and leaves was nearly the same.

关 键 词：番茄 温室 水氮耦合 生态指标 

分 类 号：S275[农业科学—农业水土工程]