山西农业大学学报（自然科学版）2017，Vol.37Issue(8)：533-539,7.
黄土高原旱作麦区休闲期覆盖对土壤水分、根系特性和产量的调控效应研究
Regulation effect of plastic film mulching during fallow period on soil water, root characteristics and yield of dry-land wheat
摘要
Abstract
[Objective]For the problem of less rainfall and uneven distribution, lower and unstable yield of dry-land wheat in the loess plateau, the best technology way of coverage water of mulching of dry land wheat was explored.[Methods]The field experiment was conducted at Wenxi County, Shanxi Province, under the conditions of full mulching (FM), ridge half mulching (MR), no mulching (NM), to study the effects of different mulching modes on soil water and root characteristics and yield.[Result]After plastic film mulching during fallow period, the soil water storage in 0~1 m soil layer at sowing stage significantly was improved, 28~42 mm, and the effect of water retention could be extend to the booting stage. After plastic film mulching during fallow period, root length, surf area, volume, and tips in the depth of 0~80 cm at different growth stage were significantly improved, especially the layer was 0~20 cm, and FM was more than RM. After plastic film mulching during fallow period, root activity from wintering stage to booting stage, after 25~35 d of anthesis were significantly improved. Finally, After plastic film mulching during fallow period, ear number and yield were improved by 10%~17% and 29%~30%.[Conclusion]Plastic film mulching during fallow period was conducive to store precipitation into the soilresult ing in the increase of soil water storage before sowing, could promote the growth of the root and increase root activity at the early and middle period, and improve ear number and yield.关键词
旱地小麦/休闲期覆盖/土壤水分/根系特性/产量Key words
Dry land wheat/Plastic film mulching during fallow period/Soil water storage/Root characteristics/Yield分类
农业科技引用本文复制引用
任爱霞,孙敏,王培如,雷妙妙,薛玲珠,高志强..黄土高原旱作麦区休闲期覆盖对土壤水分、根系特性和产量的调控效应研究[J].山西农业大学学报（自然科学版）,2017,37(8):533-539,7.基金项目
现代农业产业技术体系建设专项经费(CARS-03-01-24) （CARS-03-01-24）
山西省科技创新团队项目(201605D131041) （201605D131041）
公益性行业科研专项经费(201303104) （201303104）
山西省科技攻关项目(20140311008-3) （20140311008-3）
农业部公益性行业科研专项(201503120) （201503120）
国家科技支撑计划项目(2015BAD23B04) （2015BAD23B04）
山西省回国留学人员重点科研资助项目(2015-重点4) （2015-重点4）
