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喷灌是一项先进的灌水技术,具有省水、增产和节约劳动力等优点。目前,我国正常运行的喷灌面积仅800万亩,约占灌溉面积的1％。陕西省喷灌面积约10万亩左右。随着我国国民经济的发展,工农业用水量急剧增加,水源紧张,发展先进的喷灌技术势在必行。为了吸取经验教训,少走弯路,这就要求我们根据各地的自然条件和社会经济等条件,进行分析论证,对适宜喷灌的地方和喷灌什么作物能获得最大的经济效益等问题作出正确的回答。本文试用逐步判别分析方法并用电子计算机计算对陕西省进行喷灌区划,该法与传统的分区方法相比,能定量地考虑多因子的综合作用,具有简便、快速和错分率小的特点。设研究地域为一个系统。它包括G个喷
Sprinkler irrigation is an advanced irrigation technology, with the advantages of saving water, increasing production and saving labor. At present, China’s normal operation of the sprinkler area of only 800 mu, accounting for about 1% of irrigated area. Sprinkler irrigation area of about 10 acres in Shaanxi Province. With the development of the national economy in our country, the water consumption of industry and agriculture has been drastically increased and water resources have been tightened. The development of advanced sprinkler irrigation technology is imperative. In order to learn from our experience and learn more from others, it requires us to give correct answers to the questions on the appropriate sprinkler irrigation areas and the best economic benefits for irrigated crops based on the natural conditions and socio-economic conditions in various places. In this paper, the method of stepwise discriminant analysis and the computerized calculation of sprinkler irrigation districts in Shaanxi Province are used in this paper. Compared with the traditional method of zoning, this method can comprehensively consider the combined effect of multiple factors quantitatively and has the characteristics of simplicity, rapidity and small fractional error rate. Set the research area as a system. It includes G spray