Regulating the water consumption characteristics of crops is an important way to achieve efficient water use and develop water‐saving agriculture in semi‐arid rainfed areas. Using spring wheat cv. Longchun 27 as test material, a field experiment involved two treatments: (i) whole‐field soil plastic mulching and bunch seeding (PM); (ii) uncovered and bunch seeding (CK). The results showed that soil water storage in the 0–300 cm profile for PM was higher than that of CK. Before the jointing stage, the periodic water consumption, water consumption modulus coefficient and water consumption intensity of PM were lower than CK by 10.7–36.2 mm, 19.8–52.4% and 9.1–52.7%; However, from jointing to heading, they were correspondingly higher by 15.8–21.8 mm, 19.5–34.1% and 18.2–32.9% (P < 0.05). The above‐ground biomass, crop growth rate and water consumption efficiency of PM were significantly higher than that of CK. Based on the significantly increased spike length, grain number per spike and 1000‐grain weight, PM increased grain yield by 8.9–22.8%, and WP by 9.9–25.2% without significant change of evapotranspiration, as compared with CK. Consequently, PM regulated the water consumption characteristics of spring wheat, resulting in significantly increased water productivity and grain yield. © 2020 John Wiley & Sons, Ltd.

中文翻译：

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半干旱区土壤覆盖对春小麦耗水特征和产量的影响

调节农作物的耗水特征是在半干旱雨育区实现高效用水和发展节水农业的重要途径。使用春小麦简历。作为试验材料的龙春27号，一个田间试验涉及两种处理方法：（i）全田土壤地膜覆盖和成束播种（PM）；（ii）裸露和束播（CK）。结果表明，PM在0-300 cm剖面的土壤蓄水量高于CK。拔节前，PM的周期性耗水量，耗水模量系数和耗水强度均比CK低10.7-36.2mm，19.8-52.4％和9.1-52.7％。但是，从拔节到航向，它们分别增加了15.8-21.8 mm，19.5-34.1％和18.2-32.9％（P<0.05）。PM的地上生物量，作物生长速率和耗水效率均显着高于CK。与CK相比，基于穗长，每穗粒数和1000粒重的显着增加，PM的谷物产量增加了8.9–22.8％，WP增加了9.9–25.2％，而蒸散量没有明显变化。因此，PM调节了春小麦的耗水特性，从而显着提高了水分生产率和谷物产量。分级为4 +©2020 John Wiley＆Sons，Ltd.