乌鲁木齐市青格达湖乡蔬菜大棚土壤粒径分析

Soil Particle-size Analysis of Vegetables Big Awning in the Qingge Da Lake Town Urumqi City

土壤基质是由不同比例的、粒径粗细不一、形状和组成各异的颗粒组成,一般分为砾、砂、粉粒和粘粒4级。而土壤粒径分布强烈地影响着土壤的水力特性、土壤肥力状况以及土壤侵蚀等,是重要的土壤物理特性之一。由于不同粒径的土粒其理化性质有所不同,因此土壤的粒径分布在某种程度上决定了土壤的结构和性质,这在农业利用中具有极其重要的意义。

The soil matrix is composition of the different proportion, thick and thin different of the particle -- size, the different shape. It can be divide into 4 levels which are the gravel, the sand, the silt and the clay. But the soil grain--size distribution is affecting the soil hydraulic characteristic, the soil fertility condition as well as the soil erosion and so on. It is one of important soil physical characteristics. Because the different particl--size soil particle, its physics--chemistry property is difference. The soil grain--size distribution had decided to the soil structure and the nature in a certain extent. It has the extremely vital significance in the agricultural use.