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免灌农业据美国农业部的研究人员透露,半干旱地区的农民渐渐在改变引水灌溉的做法。他们借助水分保持、天气预测以及作物品种改良这些新科学技术成就,开始采用不浇灌作物的旱地耕作方法。近来,灌溉费用上涨,农作物批发价格下跌,使得水利建设成为一项昂贵的投资。美国许多半干旱地区的农民改种一些不需要灌溉的作物,诸如冬小麦、棉花、高梁,结果节省了大量资
Irrigation-free agriculture According to researchers from the United States Department of Agriculture, farmers in semi-arid areas are gradually changing the practice of diversion irrigation. With new scientific and technological achievements such as moisture conservation, weather forecasting and improved crop varieties, they began to adopt dry farming practices that irrigate crops. Recently, irrigation costs have risen and crop prices have dropped, making water conservancy an expensive investment. Many farmers in the semi-arid areas of the United States have switched to crops that do not require irrigation, such as winter wheat, cotton and sorghum, resulting in significant savings