关键词: 畜禽粪便；海南；氮磷负荷；总量控制

Abstract:

In order to evaluate the gross-amount of animal and poultry manure and its effect on evironment in Hainan Province, this paper took the pollutant excretion coefficient of livestock and poultry as basis, used the statistical data collected in 2011, and studies the gross-amount of livestock and poultry manure, COD regional distribution and  nitrogin and phosphorus load on cultivated lands. The paper also made initial assessment about environmental capability and pollution risk of livestock and poultry husbandry in Hainan Province, taking EU standard of limitation for nitrogen application on cultivated land. The results indicated that in 2011, the total ammount of livestock and poultry manure in Hainan Proince was 1 741.75 million t. The mannue resources produced in Haikou, Wenchang, Wanning, Dingan, Chengmai, Danzhou and Ledong 7 cities and counties were over ten thousand tons. The average  nitrogen and phosphorus load per unit area of cultivated land in Hainan Province were 192.72 kg/hm2 (TN) and 54.80 kg/hm2 (TP). Except Haikou, Lingao, Dongfang, Ledong, Qiongzhong, Baisha and Changjiang 7 cities and counties, all the other cities and counties exceeded the EU standard limitation. The environmental capacity for livestock and poultry husbandry in Hainan Province were 1.925 11 million  heads (equivalent based on nitrogen). The actual total amount of livestock and poultry raised were 13.01% higher than the environment capacity for livestock and poultry husbandry. About 11 cities and counties exceeded the environmental capacity for animal husbandry. These results provided references for decision-making on controlling regional gross ammount of animal husbandry, rational distribution, and comprehensive utilization of animal mannue.

Key words: animal manure, Hainan, nitrogen and phosphorus load, gross ammount control