设施辣椒需水、需肥规律及土壤盐分空间变异研究  

Study on Water and Fertilizer Requirement Law of Pepper Under Drip Irrigation and Spatial Heterogeneity of Soil Salinity

作　　者：纪立东[1] 杨建国[1] 樊丽琴[1] 李建茹[2] 张志明[2] 王军[2] 尚红莺[1] 

机构地区：[1]宁夏农林科学院农业资源与环境研究所,银川750002 [2]平罗县农业技术推广服务中心,宁夏石嘴山753400

出　　处：《节水灌溉》2015年第9期27-29,共3页Water Saving Irrigation

基　　金：石嘴山市科技攻关计划项目"设施蔬菜滴灌施肥;施药技术应用"

摘　　要：通过对设施辣椒土壤含水量、全盐量、植株氮磷钾等进行定期监测,明确了滴灌施肥条件下设施辣椒的需水、需肥规律及盐分空间变异特征。研究结果表明:滴灌施肥条件下,设施辣椒全生育期累积耗水量为492.5mm,日均耗水量均值为2.84mm/d;每生产1 000kg设施辣椒需吸收N 3.29kg、P2O50.48kg、K2O 4.10kg,其中N∶P2O5∶K2O=6.85∶1∶8.54。设施土壤盐分含量分布总体上呈现表聚性,以50cm为分界,上层多呈半圈状分布,下层多呈面状或条块状分布。The indicators,such as soil moisture,total salt and NPK of plant,were monitored for a long term to study the water and fertilizer requirement law of pepper under drip irrigation and spatial heterogeneity of soil salinity.The results showed that the cumulative water consumption of the greenhouse pepper during the whole growth period was 492.5mm and the average daily water consumption volume was 2.84mm/d;and 3.29 kg N,0.48 kg P2O5and 4.10 kg K2O were absorbed by 1 000 kg pepper（N∶P2O5∶K2O=6.85∶1∶8.54）;the content of soil salt distribution appeared surface accumulation on the whole,and with the cutoff value 50 cm,the upper showed half circle distribution,while the lower mostly showed face shape or strip shape distribution.

关 键 词：滴灌施肥 辣椒 需水规律 需肥规律 盐分变异 

分 类 号：S156.4[农业科学—土壤学] S275.6[农业科学—农业基础科学]