盐分条件下水氮对向日葵影响及其产量模型研究  

The study of salt water and nitrogen coupling effect on potted sunflower and it's yield model

作　　者：霍星[1] 史海滨[1] 田德龙[1,2] 闫建文[1] 戴佳信[1] 

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,呼和浩特010018 [2]水利部牧区水利科学研究所,呼和浩特010020

出　　处：《节水灌溉》2012年第6期22-26,共5页Water Saving Irrigation

基　　金：国家自然科学基金项目(50769004);"十一五"国家科技支撑计划重点项目(2007BAD88B04)

摘　　要：为了提高盐渍化地区水肥利用效率,在内蒙古河套灌区沙濠渠试验站利用盆栽试验,采用三因素五水平二次通用旋转组合设计,以土壤含水量、施氮肥量、土壤EC值为因子,对水氮盐耦合效应展开了试验研究,并构建了水氮盐产量模型,结果表明:水氮盐最优组合方案为土壤水分为相对田间持水率58.4%～78.03%,施氮量392.25～414.75kg/hm2,土壤EC值0.25～0.45ms/cm。Pot experiment Hetao irrigation area in Inner Mongolia was sand canal experiment stations, the use of three factors level five general rotatory composed design, by soil moisture content, nitrogen amount, and the soil EC value for factor to salt water and nitrogen on coupling effect, the results show that the optimal combination of salt water and nitrogen scheme for the soil moisture for relative field hold water rate 58. 4%-78. 03%, and nitrogen 392. 25~414. 75 kg/hm2 , soil EC value 0. 25~0. 45 ms/cm.

关 键 词：水氮盐耦合 产量模型 向日葵 

分 类 号：S156.4[农业科学—土壤学] S565.5[农业科学—农业基础科学]