基于Meta评价控制性分根交替灌溉的作物水分利用效率
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摘要
为了确定控制性分根交替灌溉(CRDI)对作物水分利用效率(WUE_C)的作用,收集CRDI的相关试验数据,应用Meta分析方法定量分析了不同区域、气候条件、种植条件、灌溉制度和作物类型下CRDI对WUE_C的影响.结果表明:在中国范围内,CRDI提升WUE_C为28.9%,西北地区WUE_C提升最为显著达到了49.29%;年均降水量在200～800 mm的区域,CRDI能够使WUE_C提升29.92%,而在南方地区和年均降水量>800 mm的区域,WUE_C提升不显著;在年均气温高于12℃的区域WUE_C提升更明显,可以达到36.98%;CRDI在温室大棚中WUE_C提升最为显著,达到了53.45%;CRDI技术应用到地面畦灌、固定灌溉、沟灌和滴灌后,其WUE_C分别提升37.03%,21.41%,16.59%和32.56%.可见控制性分根交替灌溉能有效提高WUE_C,但提升率会受到作物种植条件、种植区域的气候条件、灌溉方法和作物种类等因素的影响.
To determine the effects of controlled root-dividing alternate irrigation(CRDI) on crop water use efficiency(WUE_C), the test data of CRDI was collected, and the effects of CRDI on WUE_C in different regions, climatic conditions, planting conditions, irrigation schemes and crop types were analyzed by Meta-analysis method. The results show that CRDI can increase WUE_C by 28.9% in China, and WUE_C is increased most significantly by 49.29% in Northwest. In the area where the annual average precipitation is between 200 and 800 mm, CRDI can increase the crop WUE_C by 29.92%. However, in the south and the area where the annual average precipitation is greater than 800 mm, the increasing of WUE_C is not significant. CRDI significantly increases the WUE_C of crops by 36.98% when the average annual temperature is higher than 12 ℃. In the greenhouse, the increasing of WUE_C is the most significant by 53.45%. Applying CRDI into flood irrigation, fixed irrigation, furrow irrigation and drip irrigation, the values of WUE_C are increased by 37.03%, 21.41%, 16.59% and 32.56%, respectively. CRDI can significantly improve the WUE_C of different crops, and it is affected by the physiological growth characteristics of crop and test area.
To determine the effects of controlled root-dividing alternate irrigation(CRDI) on crop water use efficiency(WUE_C), the test data of CRDI was collected, and the effects of CRDI on WUE_C in different regions, climatic conditions, planting conditions, irrigation schemes and crop types were analyzed by Meta-analysis method. The results show that CRDI can increase WUE_C by 28.9% in China, and WUE_C is increased most significantly by 49.29% in Northwest. In the area where the annual average precipitation is between 200 and 800 mm, CRDI can increase the crop WUE_C by 29.92%. However, in the south and the area where the annual average precipitation is greater than 800 mm, the increasing of WUE_C is not significant. CRDI significantly increases the WUE_C of crops by 36.98% when the average annual temperature is higher than 12 ℃. In the greenhouse, the increasing of WUE_C is the most significant by 53.45%. Applying CRDI into flood irrigation, fixed irrigation, furrow irrigation and drip irrigation, the values of WUE_C are increased by 37.03%, 21.41%, 16.59% and 32.56%, respectively. CRDI can significantly improve the WUE_C of different crops, and it is affected by the physiological growth characteristics of crop and test area.
引文
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[8] HOCHMUTH H,THEVS N,HE P.Water allocation and water consumption of irrigation agriculture and natural vegetation in the Heihe River watershed,NW China[J].Environmental Earth Sciences,2015,73(9):5269-5279.
[9] 徐军用,姜俊.3种灌水方式对茄子生长、产量及品质的影响[J].河南农业科学,2014,43(8):110-112.XU J Y,JIANG J.Effects of three kinds of irrigation modes on growth,yield and quality of eggplant[J].Journal of Henan Agricultural Sciences,2014,43 (8):110-112.(in Chinese)
[10] KUMAR P S,SINGH Y,NANGARE D D,et al.In-fluence of growth stage specific water stress on the yield,physico-chemical quality and functional characteristics of tomato grown in shallow basaltic soils[J].Scientia Horticulturae,2015,197:261-271.