猪粪厌氧、有氧发酵物氮源对甘蓝生长及土壤养分的影响

探讨了在等氮量供应下,猪粪厌氧发酵物(沼液)及有氧发酵物(堆肥)氮源对甘蓝生长及土壤养分的影响,结果表明:在等氮量供应的情况下,施用猪粪沼液不仅可以替代化肥为作物提供生长所必需的氮素,而且提高了养分的利用效率,对甘蓝的增产效果显著;而施用猪粪堆肥处理的甘蓝产量较低,但是施用猪粪堆肥可以提高土壤有机质和土壤p H值,减少施用化肥带来的土壤酸化危害;在等氮量供应的情况下,单施猪粪堆肥处理的土壤有效磷、速效钾含量最高。

Effect of the nitrogen of biogas slurry and composted pig manure on yield of Brassica oleracea and soil quality

The effects of different nitrogen sources from the anaerobic fermented product (Biogas slurry) and the aerobic fermented product (Compost) of pig manure on Brassica oleracea growth and soil quality were discussed in this paper.The results indicated that at the same dosages of nitrogen fertilizr,yield of Brassica oleracea was higher when biogas slurry was applied than that of when compost was used. Biogas slurry could improve nutrient use efficiency.Meanwhile,the compost could increase soil organic matter and improve soil the value of pH,reducing soil acidification due to fertilizer application.Also,at the same dosages of nitrogen fertilizer,the soil available phosphorus and available potassium with only compost application was the highest.