| This paper attempts to analyze the temporal stability of the Yellow River sediment reclamation soil,the spatial variation and pattern distribution,and the control effect of soil moisture factors in the Yellow River sedimentation and reclamation of the Yellow River as an example.The spatial distribution of soil moisture and the vertical change rule of the soil moisture,and guide the regional agricultural production,vegetation restoration and land use rationalization Theoretical support.In order to detect the spatial and temporal changes of soil moisture after reclamation,crop growth was observed and crop yield was calculated to detect the effect of soil moisture on crops in the Yellow River Sediment Reclamation Land.In this paper,the temporal stability and spatial variability of soil moisture in this type of soil are introduced by classical statistics and geostatistics.The influence of soil moisture on the influence of soil moisture is analyzed by gray correlation analysis,and the degree of curve shape of different influencing factors is fully utilized.The main conclusions are as follows:The moisture content of the reclaimed soil has obvious seasonal characteristics.The moisture content in May and June is relatively low.In July and August,the soil moisture content will be improved obviously with the seasons.During the study period,the gap between 0-10 cm and 20-30 cm soil moisture content was significant at different time points,and there was obvious variability.The coefficient of variation of water content in 0-10 cm,10-20 cm and 20-30 cm soil thickness is between 0.21 and 0.37,and the time variation is weak variation.The soil moisture content of 0 replicates at 0-10 cm and 10-20 cm varied with time,and the change was consistent with the transects without profile.10 cm to 30 cm at different depths of soil moisture content of dynamic changes,then the different soil profiles from the surface to the deep layer of stability is enhanced.The trend of Moran’s I coefficient of soils reclamation showed that the spatial pattern of soil moisture was plaque distribution.In the June study area,there was no positive spatial correlation between 0-10 cm and 20-30 cm soil moisture,and 10-3 cm depth soil moisture was negative spatial autocorrelation.The Moran’s I coefficients of 0-10 cm,10-20 cm and 20-30 cm soil moisture showed negative spatial autocorrelation after the rainy season in July and August,indicating that soil moisture was affected by maize roots The effect of absorption is small,still maintain a strong ability to hold water.In the study area,the Moran’s I coefficient of the soil moisture at the end of the rainy season in the rainy season rose,and the Moran’s I of 0-10 cm and 10-20 cm depth increased,and the Moran’s I of 20-30 cm depth soil moisture did not change significantly The results showed that 0-10 cm and 10-20 cm depth soil moisture decreased with the decrease of precipitation and the moisture absorption of maize roots,and the water retention capacity of soil moisture decreased,while the water holding capacity of soil moisture at 20-30 cm depth was still better.The gray relational index of the three repeats in the study showed a high,middle low and close index,indicating that the depth of soil moisture and sediment quality were higher,and the quality of different sediment was different Deep soil moisture changes,will have different effects. |
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