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在北疆地区开展非充分灌溉试验,分析北疆干旱荒漠地区主要人工草地在不同土壤水分条件下的作物产量,确定了紫花苜蓿、苏丹草和青贮玉米的水分生产函数模型,并分别采用Jensen模型、Stewart模型和Jensen模型得出了各生育阶段的敏感指数和敏感系数。检验结果表明,所确定的模型有较高的精度,平均相对误差为6.51%、9.24%和9.25%。该研究结果可为合理开发阿勒泰草原乃至新疆牧区有限的水土资源提供理论和技术支撑。
In northern part of Xinjiang Uygur Autonomous Region, under-sufficient irrigation experiments were carried out to analyze the crop yield of main artificial grassland under different soil moisture conditions in the northern arid desert region of China. The water production function models of alfalfa, sudangrass and silage maize were determined, and the Jensen model , Stewart model and Jensen model to obtain the sensitivity index and sensitivity coefficient of each growth stage. The test results show that the model has a high accuracy, the average relative error of 6.51%, 9.24% and 9.25%. The results of this study can provide theoretical and technical support for the rational development of limited land and water resources in the Altai steppe and even in Xinjiang pastoral areas.