| In order to improve the soil fertility of vineyard by rational application of sheep manure, and reduce
the pollution of nitrogen, iron, copper and other substances in sheep manure to the environment, with fully decomposed
sheep manure as the base fertilizer, the experiment, taking the soil without base fertilizer as the control check (CK),
was set up by applying 20, 40, 60, 80 and 100 t/hm2 of base fertilizer respectively to study the influence of the sheep
manure returing on the moisture, pH and as well as total nitrogen, available phosphorus and available potassium
contents in the soil. The results showed that sheep manure returning could improve soil moisture, and the deep soil
water storage capacity increased with the increment of fertilization amount. pH value of the soil decreased under sheep
manure returning mode, while contents of total nitrogen, available phosphorus and available potassium in different
layer were increased with the increment of fertilizing amount. Furthermore, sheep manure returning can improve the
content of organic matter in the soil, which was increased in different soil layers with the increase of fertilizing amount.
The cation exchange capacity (CEC) in each soil layer reached the maximum value (15.62, 14.70 and 12.25 cmol/kg
respectively) when 100 t/hm2 of sheep manure was applied. |
