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添加玉米秸秆对绿花菜尾菜堆肥植物毒性的影响 被引量:3
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作者 嘎毕拉 罗维 《环境科学学报》 CAS CSCD 北大核心 2022年第5期395-404,共10页
为揭示不同比例作物秸秆和蔬菜尾菜堆肥过程中种子毒性变化及其影响机理,开展了为期55 d的以玉米(Zea mays L.)秸秆为辅料,绿花菜(Brassica oleracea L.var.botrytis L.)尾菜为主料的工厂化条垛堆肥,分别设置加入高(湿重比4∶12)和低(... 为揭示不同比例作物秸秆和蔬菜尾菜堆肥过程中种子毒性变化及其影响机理,开展了为期55 d的以玉米(Zea mays L.)秸秆为辅料,绿花菜(Brassica oleracea L.var.botrytis L.)尾菜为主料的工厂化条垛堆肥,分别设置加入高(湿重比4∶12)和低(湿重比1∶12)比例秸秆与尾菜的堆肥处理.测定了不同时期堆肥pH、电导率(EC)、可溶性有机碳(DOC)、硝氮(NO;-N)、氨氮(NH_(4)^(+)-N)、碳氮比(C/N)、大白菜种子(Brassica rapa L.)的发芽指数(Germination Index,GI)、相对生长指数(Relative Growth Index,RGI)和α-淀粉酶、蛋白酶、脂肪酶的变化.结果表明,高比例秸秆堆肥处理的高温(>55℃)持续期显著高于低比例处理.堆肥结束时两个处理的堆肥均呈碱性,且EC、DOC、NH_(4)^(+)-N和NO_(3)^(-)-N含量均降低,C/N呈先升后降的趋势.高比例秸秆堆肥处理种子α-淀粉酶和脂肪酶活性均高于低比例处理,但其蛋白酶活性则相反.低比例处理堆肥的GI和RGI显著高于高比例处理.堆肥的EC、DOC、NH_(4)^(+)-N含量与种子α-淀粉酶活呈显著正相关,且与GI和RGI呈负相关.高比例秸秆尾菜堆肥可提高种子脂肪酶活.本研究可为作物秸秆与尾菜工厂化条垛堆肥工艺参数优化及土地利用提供重要理论依据和决策支持. 展开更多
关键词 发芽指数 相对生长指数 条垛式堆肥 种子酶活性 植物毒性
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Identification of Fungal Communities in Producing Compost by Windrow Method
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作者 Rouhullah Dehghani Mohammad Ali Asadi +4 位作者 Esmail Charkhloo Gholamreza Mostafaie Mohmoud Saffari Gholam Abbas Mousavi Mohammad Pourbabaei 《Journal of Environmental Protection》 2012年第1期61-67,共7页
Considering the importance of fungal genera in producing compost from piling organic matter or biodegradable waste, this study aimed to identify the fungal species and their negative effect on human health during the ... Considering the importance of fungal genera in producing compost from piling organic matter or biodegradable waste, this study aimed to identify the fungal species and their negative effect on human health during the compost production by windrow method. In this descriptive study, 99 compost samples were collected from the composting research site at Kashan University of medical sciences within 63 days from Oct 3 to Dec 4, 2010. Sixty-six samples were cultured to determine the fungal species and 33 samples were transferred to the laboratory to determine the physical and chemical parameters. Twenty-five fungal species were identified during the compost process including 15 saprophytes, 8 dermatophites, 1 opportunistic and 1 yeast fungi. Identified fungal species during the compost process according to their frequencies were Aspergillus spp )34.45%), Microsporium spp (18.89%), Trichophyton spp (8.89%), Yeast sp (6.67%), Mucor sp (5.56%), Penicillium sp )4.45%), Rhizopus sp (4.45%), Fusarium sp (3.34%), Cladosporium sp )3.34%), Curvularia sp (3.34%) and also other fungal species (6.62%), respectively. Considering the presence of various pathogenic fungi during the composting process, the employees of the compost factory should use individual protective devices and also due to the presence of 11 fungal species in the mature compost and their pathogenic effect, preventive measures should be taken by persons involved in the production of compost especially farmers, in order to prevent successive inhalation of spores. 展开更多
关键词 compost windrow METHOD FUNGAL SPECIES
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