Debris flow waste-shoal land

with proper sunshine and abundant water resource and gentle slope

is a kind of land resource in Jiangjia gully.In order to exploit the debris flow waste-shoal land

the soil fertility properties are studied.The results indicate that

(1) The soil of debris flow waste-shoal land is stoned and sanded seriously.The power of absorbing and supplying moisture and nutrients is low

which is concerned on soil layers and soil particle composition.(2) The microaggregate of the debris flow waste-shoal land is less

mainly distributed in 0.02 to 0.002 mm in the rice-field topsoil and in 0.25 to 0.05 mm in the dry land.(3) The soil nutrient is poor.Organic matter

total N

total P

available N

available P and available K are lack seriously.Wherever total K is abundant

and the applications of organic and inorganic fertilizer

and siltigation are advantageous to improve the soil synthetic fertility.