ABSTRACT:Changes in cropping patterns, water use, and profitability of producing sorghum with the LID (Limited Irrigation‐Dryland) furrow irrigation system were compared with conventional irrigation practices. A recursive linear programming model was used to assess the economic impacts over a ten‐year period. The analysis of various water resource situations in the High Plains of Texas indicated the LID system increased irrigated sorghum acreage over conventional practices. Although less irrigated and dryland wheat was generally produced, present value of returns increased from about $18 per acre to $50 per acre. Water use was slightly higher in most situations when using the LID sys
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机译：摘要：比较了LID（有限灌溉-旱地）沟灌系统在种植模式、用水量和盈利能力方面的变化。采用递归线性规划模型评估十年内的经济影响。对德克萨斯州高平原各种水资源状况的分析表明，与传统做法相比，LID系统增加了灌溉高粱种植面积。虽然灌溉和旱地小麦的产量普遍较低，但收益的现值从每英亩约18美元增加到每英亩50美元。在大多数情况下，使用 LID 系统时，用水量略高
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