豫中沙薄农田土壤水分动态变化分析

通过土壤水分测定结果，结合当地气象资料，对河南省新郑八千乡沙薄土壤水分季节性和垂直性变化进行了分析。结果表明，该区土壤水分一年内季节性变化可分为土壤水分相对稳定期、缓慢消耗期、大量损耗期、恢复期四个阶段。土壤水分垂直变化表现出耕作层水分含量较低，且变化较快；心土层含水量较耕层高，对土壤水分传导快，干湿变化幅度大，且受降水波及大，干旱对其影响程度较重；底土层含水量较耕作层和心土层高，且较稳定，含水量较为丰足。

The Analysis of Sandy-leanness Farming Naked Land Soil Moisture Dynamic Variation in Henan Province

The paper studied the water seasonal variation and vertical variation of sandy-leanness farming naked land soil in Xingzheng county Baqian village, Henan Province by soil water menstruated and weather datum analyzed. The results indicated that the seasonal soil moisture variation could divide into four phases: soil moisture relative stabilization phase, slowly consumable phase, mass consumable phase and resumable phase. The vertical variation was that the soil moisture content of cultivate layer was very little, change considerable fast. The soil moisture content of central layer was higher, and the soil transmit very fast, and dry- humid varies range greatness, it also affect by precipitation and drought. The soil moisture content of bottom layer was higher than that of cultivate layer and central layer, it very stabile and abundance.