稻糠与浮萍控制稻田杂草和稻纹枯病初步研究  

Control of weeds and rice sheath blight disease in paddy fields by rice chaff and duckweeds ( Lemna spp.)

作　　者：黄世文[1] 余柳青[1] 段桂芳[1] 李迪[1] 阮云芳[1] 余美林[1] 喻锦秀[2] 罗宽[2] 

机构地区：[1]中国水稻研究所,杭州310006 [2]湖南农业大学,长沙410128

出　　处：《植物保护》2003年第6期22-26,共5页Plant Protection

摘　　要：温室盆栽和田间小区试验研究了稻糠、稻草糠、浮萍和满江红对稻田主要杂草和水稻纹枯病的控制作用,以及对水稻生长及产量的影响。结果表明,单独施用稻糠、稻草糠、浮萍和满江红对水稻分蘖、株高、生物量和产量无显著影响,但可明显抑制稗草的萌发、降低其生物产量;对移栽的莎草、鸭舌草、牛毛毡的株高、鲜重控制效果不一。稻糠加浮萍可显著提高对主要杂草和水稻纹枯病的控制效果,且对水稻无明显影响。The effects of rice chaff, rice straw powder, duckweed ( Lemna spp. ) and overlapping azolla, Azolla imbri-cata (Roxb. ) Nakai on rice growth and yields, and their control efficacy against weeds and rice sheath blight (Rhizocoto-nia solani Kilhn) were studied in greenhouse and paddy fields. The results indicated that there were no significant negative effect on rice tiller, plants height, biomass production and yields by using rice chaff, rice straw powder, duckweed and overlapping azolla alone. However, it significantly inhibited the germination of barnyardgrass (Echinochloa crusgalli) and reduced its biomass production. The effects on plants height and biomass production of transplanted weeds difformed aglin-gale ( Cyperus difformis) , sheathed monochoria ( Monochoria vaginali) and needle spikesedge ( Eieocharis yokoscensis ) were different. The control efficacy against weeds and sheath blight disease were significantly improved by using rice chaff combined with duckweed, whereas there was no obvious negative effect on rice.

关 键 词：稻糠 浮萍 稻田杂草 稻纹枯病 生态控制 水稻 无公害生产 

分 类 号：S435.111.4[农业科学—农业昆虫与害虫防治] S451.21[农业科学—植物保护]