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我省中部地区,除少数灌区外,其主要自然特点是干旱,贫瘠。具体表现为:降水量少(年均200—400毫米),且四季分配极不均匀;蒸发量极大,超过降水量几倍至十倍;光山秃岭,植被稀少,水土流夫严重,土壤有机质极缺。这样的自然特点无疑对小麦生产极为不利。但另一方面,日照强,昼夜温差大,又是有利条件。千百年来,当地农民在生产实践中,趋利避害,极累了一整套同恶劣自然环境做斗争的栽培措施;同时,在大自然的帮助
In the central part of our province, except for a few irrigated areas, the main natural features are aridity and barrenness. Specific performance: less precipitation (200-400 mm average annual), and the distribution of the four seasons is extremely uneven; evaporation is very large, more than several times the precipitation to ten times; bare mountain Bald Ridge, vegetation is scarce, serious water and soil erosion, soil Extreme lack of organic matter. This natural feature is undoubtedly extremely detrimental to wheat production. But on the other hand, strong sunshine, large temperature difference between day and night, but also favorable conditions. For thousands of years, local peasants have taken advantage of their advantages and disadvantages in their production practices, greatly imposing a set of cultivation measures in their struggle against the harsh natural environment. At the same time, with the help of nature