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商水县的坡洼薄地主要分布在汾河沿岸的湖坡地,占全县总耕地面积的31%,粮食产量低而不稳,丰收年粮食年亩产二百多斤,欠收年不上百斤,经调查分析,坡洼薄地低产的主要原因:一是土壤有机质缺乏,其含量多数在0.8%以下,致使土壤结构不良,雨后耕作层往往出现水分饱和状态,使土壤暂时缺氧,影响农作物的正常生长发育;二是土壤严重缺磷、氮磷比例失调,据12个点测定结果速效磷均在5PPm以下,有的
The slopes and valleys in Shangshui County are mainly distributed on the slopes of the banks of the Fen River, accounting for 31% of the total cultivated land of the entire county. The output of grain is low and unstable, and the annual harvest of grain in the harvest year is more than 200 jin per mu. According to the investigation and analysis, the main reasons for the low yield of Slope depression are as follows: First, the lack of organic matter in the soil, most of which is below 0.8%, resulting in poor soil structure. After rain, the tillage layer tends to be saturated with water, Affecting the normal growth and development of crops; the second is the serious shortage of phosphorus in soil, the proportion of nitrogen and phosphorus imbalance, according to the results of 12 measurements of available phosphorus are below 5PPm, and some