棕腐酸

Brown soil and meadow soil from cultivated land were used in the laboratory and pot experiment to study the effects of applying humic acid and organic manure on potassium fixation and release in the soil,The result shown: Applying of humic acids could accelerate potassium releasing and decrease the fixation of added potassium.

以耕地棕壤和草甸土为供试土壤，研究了施用腐殖酸和有机肥对土壤固钾与释钾作用的影响，主要结果如下：施用腐殖酸能够促进土壤钾素的释放和降低土壤的固钾量。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。