土壤学报
土壤學報
토양학보
ACTA PEDOLOGICA SINICA
2010年
1期
131-137
,共7页
王秀国%王一奇%严虎%楚小强%虞云龙
王秀國%王一奇%嚴虎%楚小彊%虞雲龍
왕수국%왕일기%엄호%초소강%우운룡
多菌灵%重复施药%土壤微生物%功能多样性%BIOLOG
多菌靈%重複施藥%土壤微生物%功能多樣性%BIOLOG
다균령%중복시약%토양미생물%공능다양성%BIOLOG
Carbendazim%Repeated applications%Soil microorganism%Community diversity%BIOLOG
选择浙江大学华家池校区大棚蔬菜试验田,研究了多菌灵(以active ingredient, a.i.计) 0.94、1.88和4.70 kg hm~(-2)三种剂量重复施药对其持久性及土壤微生物功能多样性的影响.结果表明,第1次施药后,多菌灵在土壤中的降解速率分别为0.11、0.25、0.74 mg kg~(-1) d~(-1);第4次施药后,多菌灵在土壤中的降解速率分别达到0.18、0.39、1.00 mg kg~(-1) d~(-1).随着施药次数的增加,多菌灵的降解速率逐渐增大.初次施药后,土壤微生物群落AWCD值明显低于对照,土壤微生物群落的Shannon、Simpson和McIntosh指数也均低于对照水平.第4次施药后,三个处理土壤微生物群落的AWCD值、Shannon、Simpson和McIntosh指数均恢复到对照水平.
選擇浙江大學華傢池校區大棚蔬菜試驗田,研究瞭多菌靈(以active ingredient, a.i.計) 0.94、1.88和4.70 kg hm~(-2)三種劑量重複施藥對其持久性及土壤微生物功能多樣性的影響.結果錶明,第1次施藥後,多菌靈在土壤中的降解速率分彆為0.11、0.25、0.74 mg kg~(-1) d~(-1);第4次施藥後,多菌靈在土壤中的降解速率分彆達到0.18、0.39、1.00 mg kg~(-1) d~(-1).隨著施藥次數的增加,多菌靈的降解速率逐漸增大.初次施藥後,土壤微生物群落AWCD值明顯低于對照,土壤微生物群落的Shannon、Simpson和McIntosh指數也均低于對照水平.第4次施藥後,三箇處理土壤微生物群落的AWCD值、Shannon、Simpson和McIntosh指數均恢複到對照水平.
선택절강대학화가지교구대붕소채시험전,연구료다균령(이active ingredient, a.i.계) 0.94、1.88화4.70 kg hm~(-2)삼충제량중복시약대기지구성급토양미생물공능다양성적영향.결과표명,제1차시약후,다균령재토양중적강해속솔분별위0.11、0.25、0.74 mg kg~(-1) d~(-1);제4차시약후,다균령재토양중적강해속솔분별체도0.18、0.39、1.00 mg kg~(-1) d~(-1).수착시약차수적증가,다균령적강해속솔축점증대.초차시약후,토양미생물군락AWCD치명현저우대조,토양미생물군락적Shannon、Simpson화McIntosh지수야균저우대조수평.제4차시약후,삼개처리토양미생물군락적AWCD치、Shannon、Simpson화McIntosh지수균회복도대조수평.
Effects of repeated application of fungicide carbendazim at a rate of 0.94, 1.88, 4.70 kg hm~(-2) calculated by active ingredient (a.I.) on diversity of soil microbial communities were studied using BIOLOG and its degradation dynamics in soil was investigated under field conditions. The degradation rate of carbendazim after the first application in the soil was 0.11, 0.25 and 0.74 mg kg~(-1) d~(-1), in treatments of 0.94, 1.88 and 4.70 kg hm~2 calculated by a.I., respectively, and rose to 0.18, 0.39 and 1.00 mg kg~(-1) d~(-1), respectively after the fourth application, showing a significant trend of the degradation rate rising with the application frequency. A significant inhibitory effect of carbendazim on average well color development (AWCD) was observed after the first application. The AWCD values then increased slightly with the application frequency. Shannon, Simpson and Shannon indexes of the soil microbial communities in the soil were also inhibited by the first application, which suggested that the richness, evenness and dominant character of soil communities in the treated soils were altered by the repeated application of carbendazim. However, after the second application, soil microorganisms gradually adapted to carbendazim and recovered to the level in the control without carbendazim treatment.