水肥调控对设施土壤硝态氮含量和含水率的影响  

Effects of Water and Fertilizer Regulation on Nitrate Nitrogen Content and Moisture Content in Facility Soil

作　　者：包雪莲 张智勇 周祎 郭方亮 杨柳青 李雅剑 叶英杰 刘琦 韩新奇 董志朋 BAO Xuelian;ZHANG Zhiyong;ZHOU Yi;GUO Fangliang;YANG Liuqing;LI Yajian;YE Yingjie;LIU Qi;HAN Xinqi;DONG Zhipeng(Tongliao Institute of Agriculture and Animal Husbandry,Tongliao Inner Mongolia 028000)

机构地区：[1]通辽市农牧科学研究所,内蒙古通辽028000

出　　处：《现代农业科技》2023年第17期164-167,170,共5页Modern Agricultural Science and Technology

基　　金：国家土壤质量观测实验站项目(NAES064SQ22)。

摘　　要：本文以番茄为研究对象,采用灌水下限土壤水吸力和施氮量2因素3水平设计,开展了水肥调控对设施土壤硝态氮含量和含水率的影响研究。结果表明,土壤硝态氮含量、含水率的动态变化与灌水下限土壤水吸力、施氮量密切相关。土壤硝态氮含量随着施氮量的增大而增大,两者成正相关关系;土壤含水率随着施氮量的增大而不断变大,两者成正相关关系。施氮量对硝态氮含量的影响大于灌水下限土壤水吸力对硝态氮含量的影响,而灌水下限土壤水吸力对土壤含水率的影响大于施氮量对土壤含水率的影响。Taking tomatoes as the research object,this paper adopted a 2-factor and 3-level design of irrigation lower limit of soil water suction and nitrogen application rate,studied the effect of water and fertilizer regulation on the nitrate nitrogen content and moisture content of facility soil.The results showed that the dynamic changes in soil nitrate nitrogen content and moisture content were closely related to irrigation lower limit of soil water suction and nitrogen application rate.The nitrate nitrogen content in soil increased with the increase of nitrogen application rate,and there was a positive correlation between these two;the soil moisture content continuously increased with the increase of nitrogen application rate,and there was a positive correlation between these two.The impact of nitrogen application rate on nitrate nitrogen content was greater than that of irrigation lower limit of soil water suction on nitrate nitrogen content,while the impact of irrigation lower limit of soil water suction on soil moisture content was greater than that of nitrogen application rate on soil moisture content.

关 键 词：番茄 水肥调控 灌水下限土壤水吸力 施氮量 设施土壤 硝态氮含量 土壤含水率 

分 类 号：S641.2[农业科学—蔬菜学]