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1发展农村大中型沼气工程的重要性1.1畜牧业发展对环境压力越来越大随着黑龙江省“主辅换位”战略和“奶业振兴”计划的实施,畜牧业得到了快速发展,目前,全省牛、猪、羊和禽等主要品种存栏量已分别达到714万头、1 532万头、1 153万只和16 691万只,极大地促进了农村经济的快速增长。但是,畜禽业快速发展所带来的大量畜禽粪便却没有得到有效处理,按现有饲养规模,全省每年粪便产量超过亿吨,已成为农村最大的污染源之一。特别是那些专业养殖村和规模养殖企业,每逢夏天粪水四溢,蚊蝇肆虐,臭气熏天,让人难以驻足。
Importance of Developing Medium- and Large-scale Biogas Projects in Rural Areas 1.1 Pressure on Environment Due to Livestock Development With the implementation of the “master-replacement” strategy and the “dairy industry revitalization plan” in Heilongjiang Province, livestock husbandry has been At present, the total stock of cattle, pigs, sheep and poultry in the province has reached 7.14 million heads, 15.32 million heads, 11.33 million and 169.19 million respectively, which has greatly promoted the rapid growth of the rural economy . However, a great deal of livestock and poultry excrement brought by the rapid development of livestock and poultry industry has not been effectively dealt with. According to the current scale of stocking, the province’s annual stool production exceeds one hundred million tons and has become one of the largest sources of pollution in rural areas. Especially those specialized breeding villages and large-scale breeding enterprises, overflowing with manure every summer, mosquitoes and flies raging, smelly, making it difficult to stop.