The Effects of Carbon Based Fertilizer on Soil Bulk Density and Porosity and Nutrient of Potato

In order to understand application effect of carbon based fertilizer in potato production,random block design was adopted to study the effects of the carbon based fertilizer on soil bulk density and porosity and nutrient of Kexin 1 by applying 0,300,600,900,1 200 kg / ha of this fertilizer and the same amount of N,P,K fertilizer. The results showed that: With the increment of soil depth,soil bulk density increased,soil porosity and the contents of soil nutrient gradually decreased. With the increment of fertilizer,soil bulk density decreased,soil porosity and nutrient increased than that of CK. At the same amount of N,P,K,reduce the rate of soil bulk density and increase the rate of soil porosity of treatments with carbon based fertilizer were obviously higher than chemical fertilizer. Treatments with carbon based fertilizer showed a trend of lower-high-lower,but treatments with chemical fertilizer decreased. Soil nutrients of the treatments with chemical fertilizer were higher than that of treatments with carbon based fertilizer of the same amount of N,P,K in seedling stage of potato. Soil nutrients of the treatments with carbon based fertilizer were higher than that of treatments with chemical fertilizer of the same amount of N,P,K at the inflated period of tuber and harvest time. In the experiment,the soil physicochemical properties of potato of 1 200 kg / ha treatment were better,and it was the suitable match for Wuchuan areas in Inner Mongolia.