太湖一级保护区非点源磷污染的定量化研究

Quantification of non-point sources phosphorus pollution in key protection area of Taihu Lake

采用田间实验与实地调查相结合的方法 ,研究了太湖一级保护区武进市雪堰镇水稻季节各种类型非点源磷污染的负荷分配情况 .结果表明 ,雪堰镇各种类型农业非点源污染中 ,农田磷排放总量为 1313kg ,占排放总量的 5 6 .2 % ;农村居民磷排放总量为 4 4 2kg ,占排放总量的 18.9% ;城镇居民磷排放总量为5 18kg ,占排放总量的 2 2 .2 % ;养殖业磷排放总量为 6 2kg ,占排放总量的 2 .7% .在当前的非点源磷污染治理中 ,除采取有力措施控制农田养分外 ,对于城镇和农村居民生活污水和人粪尿的排放也应引起重视 .

The distribution of various kinds of non-point sources phosphorus pollution in Xueyan Town,Wujin city,Taihu area was researched through field experiments and local investigation during rice growth season. The results showed that of all kinds of phosphorus pollution,about 56.2% (1313 kg P) abstract was from farmland,22.2% (518 kg P) abstract was from town residents,18.9% (442 kg P) abstract was from village residents,and 2.7%(62 kg P) abstractwas from livestock. Besides the strict control of the phosphorus pollution from farmland,attention should also be paid on the control of domestic water pollution from towns and villages.