黑龙江省旱作区土壤物理特性及墒情实时判断方法

黑龙江省旱作区耕地土壤主要类型有白浆土、黑土、黑钙土、草甸土,本项研究通过不同类型、不同层位土壤的比重、干容重、田间持水量、总孔隙率等的实测值,采用统计分析中回归分析方法,探索各项物理指标之间的内在关系。研究结果表明,黑龙江省耕地主要土壤的土壤孔隙度与干容重呈极显著线性相关,干容重越大,孔隙度越小;田间持水量与土壤干容重同样呈显著线性相关。由此通过概化分析,确定出不同土壤容重条件下快速测墒仪体积含水率的墒情判断方法,以实时判别实测容积含水率代表的土壤干旱状况。

Soil Physical Property and Real-time Decision Method of Soil Moisture State in Heilongjiang Dry Area

The main farmland soil types in Heilongjiang province are of white pulp soil,black soil,Chernozem,meadow soil.In this study,according the actual value of dry soil density,capacity soil moisture constant by weight,soil porosity with different soil in different vertical layers,applying statistical analysis method,to solve the internal relations among the three index above.The results show that in the cultivated land of Heilongjiang province the dry soil density was significant correlation to the soil porosity...