The direct pollution on eco-environment are from feces and urine from animals and poultry,sewage water and odor from farms as well as residual mineral elements from animal excretion and other wastes.

• 畜禽粪尿、畜牧场的污水和臭气以及由排泄物残留而来的矿物元素和其它废弃物给生态环境带来直接污染；