滴灌频率对冬小麦群体田间小气候特性影响
Effects of Drip Irrigation Frequency on Field Microclimate Characteristics of Winter Wheat Population
摘要
Abstract
[Objective] Under the drip irrigation plot test condition,the soil water distribution and field microclimate characteristics of winter wheat under different drip frequencies in the oasis area of Southern Xinjiang were studied in the hope of providing basis for making winter wheat drip irrigation system.[Method] Based on the unified winter irrigation of 900 m3/hm2,after the spring,the drip irrigation amount was 4,050 m3/hm2 using three irrigation frequencies:low frequency P1 was 4,medium frequency P2 was 7,high frequency P3 was 10.[Result] Soil water distribution was greatly affected by drip frequency.The average soil moisture contents of 0-50 cm soil layer in high frequency,medium frequency and low frequency irrigation treatments were 21.97％,20.04％ and 19.76％,respectively,and the soil moisture contents of 0-30 cm layer were more stable when treated with high frequency;In the growth period,the average soil temperature of high frequency irrigation treatment was 0.40℃ and 0.83℃ lower than those of medium and low frequency irrigation treatments the average temperature in the canopy decreased by 0.37℃ and 1.15℃,canopy leaf temperature decreased by 0.42 ℃ and 1.30℃,relative humidity in the canopy increased by 1.11 and 2.28 percentage points,canopy light interception rate increased by 0.025,6 and 0.055,1.Compared with medium frequency and low frequency irrigation treatments,the yield and irrigation water use efficiency of high frequency irrigation treatment increased by 1.36％ and 20.47％.[Conclusion] High frequency drip irrigation in winter wheat field can improve field microclimate and increase yield and water use efficiency in the oasis area of Southern Xinjiang.In practice,7-10 times drip irrigation model is appropriate after spring.关键词
冬小麦/滴灌频率/土壤水分/田间小气候/水分利用效率Key words
winter wheat/drip irrigation frequency/soil moisture/field microclimate/water use efficiency分类
农业科技引用本文复制引用
黄振江,陈慧,王冀川,潘雪娇,郑雷..滴灌频率对冬小麦群体田间小气候特性影响[J].新疆农业科学,2017,54(11):2036-2045,10.基金项目
National Natural Science Foundation of China "Study on the principle of efficient use of water and regulation mechanism of wheat under drip irrigation in Xinjiang" (31260303) （31260303）
Three-Year Project of Sci-Tech Special Commissioner for Minority Inhabited Areas " Integration and demonstration of key technologies for high yield and high efficiency grain production in southern Xinjiang" (2013AA002) （2013AA002）
Tarim University President Fund Project "Study on the population quality control effect and high-yield way of drip irrigation wheat" (TDZKGG201702) （TDZKGG201702）
国家自然科学基金项目“新疆滴灌小麦水分高效利用原理与调控机理研究”(31260303) （31260303）
少数民族聚居团场科技特派员科技帮扶三年行动专项“南疆粮食高产高效生产关键技术集成与示范”(2013AA002) （2013AA002）
塔里木大学校长基金项目“滴灌小麦群体质量调控效应与高产途径研究”(TDZKGG201702) （TDZKGG201702）
