Managing Soils to Achieve Greater Water Use Efficiency

摘要: Water use efficiency (WUE) represents a given level of biomass or grain yield per unit water used by the crop. With increasing concern about availability resources in both irrigated and rainfed agriculture, there is renewed interest trying to develop an understanding how WUE can be improved farming systems modified more efficient use. This review synthesis literature directed toward role soil management practices for WUE. Soil affect processes evapotranspiration modifying available energy, profile, exchange rate between atmosphere. Plant practices, e.g., addition N P, have indirect effect on through physiological plant. A survey reveals large variation measured across range climates, crops, practices. It possible increase 25 40% that involve tillage. Overall, precipitation enhanced adoption intensive cropping semiarid environments increased plant populations temperate humid environments. Modifying nutrient 15 25%. proper management, field-scale experiences show these changes positively crop yield.