水土保持学报2023，Vol.37Issue(6)：111-118,8.DOI:10.13870/j.cnki.stbcxb.2023.06.015
浅埋滴灌土壤水分变化特征及作物耗水规律
Study on Characteristics of Soil Water Change and Law of Crop Water Consumption Under Shallow Buried Drip Irrigation
摘要
Abstract
In order to find out the shallow buried drip irrigation mode of saving water and increasing grain yield of maize,field planting experiments were carried out in Tongliao City,Inner Mongolia in 2021.Based on different irrigation levels of low water(W1=125.4 mm),medium water(W2=153.6 mm)and high water(W3=166.8 mm),as well as 100%water volume of drip irrigation as control(CK=179.8 mm),the characteristics of soil water change under different treatments and their effects on crop water consumption,water use efficiency and plant growth were analyzed.The results showed that the water content of 0-60 cm cultivated soil changed significantly with the increase of irrigation water;With the development of the growth period,the soil water content decreased from jointing stage to filling stage;The water consumption of corn crops is different as a whole,as CK>W3>W2>W1;The variation trend of maize growth characteristics was quite different,and W2 treatment had the highest plant height,stem diameter and leaf area index;The overall change of water consumption of maize in each growth period showed a fluctuating trend,reaching the peak in JT growth period;The yield of maize did not increase with the increase of irrigation amount.The yield of maize in W2 treatment was the highest,5.65%higher than that in CK treatment,and the water use efficiency was the highest,3.48 kg/m3.Before further optimizing water-saving technology and membrane pollution,W2 treatment of shallow buried drip irrigation may be the appropriate method for farmers.The research results can provide reference for water-saving irrigation of corn in semi-arid areas of China.关键词
浅埋滴灌/土壤含水量/水分利用系数/生长特征/产量Key words
shallow buried drip irrigation/soil moisture content/water use coefficient/growth characteristics/yield分类
农业科技引用本文复制引用
张洁,马鹏飞,吴素利,李生众,李敏,朱永华,邢英英..浅埋滴灌土壤水分变化特征及作物耗水规律[J].水土保持学报,2023,37(6):111-118,8.基金项目
国家自然科学基金项目(42107379) （42107379）
陕西省科学技术厅项目(2023JCYB449) （2023JCYB449）
通辽市科技计划项目(TLYF2021004) （TLYF2021004）
