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Restoring soil health to reduce irrigation demand and buffer the impacts of drought

Frontiers of Agricultural Science and Engineering 2020年第3期7卷 339-346页

作者： Rebecca SCHNEIDER Stephen MORREALE Zhigang LI erin menzies pluer Kirsten KURTZ Xilu NI Cuiping WANG Changxiao LI Harold VAN ES Department of Natural Resources Cornell UniversityIthacaNY14853USA School of Agriculture Ningxia UniversityYinchuan 750021China Modeling and Spatial Analysis Lab Department of Geography and Environmental ManagementUniversity of WaterlooWaterlooN2L 3G1Canada Cornell Soil Health Laboratory Cornell UniversityIthacaNY14853USA Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration of North-western China Ningxia UniversityYinchuan 750021China State Key Laboratory of the Seedling Bioengineering Ningxia Forestry InstituteYinchuan 750004China Collge of Life Sciences Southwest UniversityChongqing 400715China Department Soil and Crop Sciences Cornell UniversityIthacaNY14853USA

Irrigation consumes three quarters of globalwater withdrawals each year. Strategies are needed toreduce irrigationwater use, including increasingtheefficiency of transfer methods and field *** restoration of soil health, specificallythrough organic matter amendments, can substantiallyreduce irrigation demand and increase crop yield. Aprogram to restore severely degraded and desertified soilsby incorporating coarse woodchips into the soil success-fully increased rainfall capture and elevated soil moisturefor several weeks between rainfall events at both Ningxia,north-west China and North Dakota, USA. With additionof fertilizer, woodchip incorporation further increasedgrowth of wheat and alfalfa. Comprehensive soil healthassessment of remnant grasslands was used to developtarget reference soil profiles by which to guide restorationefforts. Given that most agricultural soils are degraded tosome degree, soil health restoration can provide a powerfulstrategy toward achieving global food and water security.

关键词： drought irrigation restoration soil health woodchips

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