【摘要】 多点调查和采样分析了农村沼渣的组成份,其组份特点是木质素含量较高。在土壤中的腐解速度较慢、腐殖化系数较大,田间和模拟试验土壤分析结果:施用沼渣肥料,不但提高了土壤有机碳总量,而且复合碳量也相应增加。与稻、麦草等新鲜物料比较,其增值复合量较大,增值复合度较小,复合体中紧结态腐殖质所占百分率较高。其对土壤胶体活性的影响和改土效果,虽不如新鲜有机物,但仍与堆肥、猪粪的作用大抵相当。因此,沼渣仍是一种腐熟较好的有机肥料。更多还原

【Abstract】 Surveyed and taken the samples from various rural regions in Sichuan, the composition of methane fermented sludge had been investigated and analyzed. The results showed that the content of lignin in the methane fermented sludge was high. When it was applied to the soil, the speed of decomposition was slower and the coefficient of decomposition was greater than that, of other materials. The results in field and incubation experiments showed "that the sludge applied to the soil increased not only the quantity of organic carbon but also the guantity of complex carbon correspondingly. Compared with fresh organic materials, the additional quantity of complex was greater and additional degree of complex was less. The percentage of compactly combined Humus in the organic-mineral complex was greater. Although the effects on improving soil and on improving colliod activity were less than fresh organic materials, but were equivalent approximately tc that of the compost and pig dung.更多还原