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土壤水分是土壤肥力的重要因素之一.土壤水分过少或过多,不仅直接影响作物生长,而且还会影响土壤养分、空气和热量等肥力因素的协调.例如,土壤空气的消长和成分,养分的转化释放和保存,土壤温度的升高和降低以及土壤微生物的活动等,都与土壤中水分的多少有着非常密切的关系.我省淮北地区经常出现旱涝,土壤水分的变幅很大,以致很大一部份土地,产量不稳.因此,研究淮北地区土壤的水分性质,掌握土壤水分的变化规律,采取有效措施,合理调节土壤水分,对于实现淮北商品粮基地的农业高产稳产,具有十分重要的意义. 一、淮北平原土壤的水分性质(一) 土壤的持水性能
Soil moisture is one of the important factors of soil fertility.When soil moisture is too little or too much, it not only directly affects the crop growth, but also affects the coordination of fertility factors such as soil nutrients, air and heat, for example, the growth and composition of soil air, Nutrient transformation and release and preservation, soil temperature increase and decrease and soil microbial activity, etc., are closely related with the amount of water in the soil .Hebei province often appear droughts and floods, soil moisture amplitude is large , So a large part of the land, yield instability.Therefore, the study of the water properties of soil in Huaibei area, to grasp the variation of soil moisture, take effective measures to properly adjust the soil moisture, to achieve high-yield and stable agricultural production base in Huaibei, with Very important significance.A, the nature of soil moisture in Huaibei Plain (a) soil water holding capacity