生物控草肥对稻田杂草的防治效果及其对稻田水的影响.pdfVIP

湖南农业科学 (HUNANAG阳CULTURAL SCIENCES) 2015 , (3): 40-42 , 48 DOI:IO.16498/j.cnki.hnnykx.2015.03.013 生物控草肥对稻田杂草的防治效果及其对稻田水的影响 李振兴 1 ，罗 坤 1 ，刘开林1 ，王雅菲 1 ，周小毛口 (1.湖南农业大学农药研究所，湖南长沙 410128; 2. 湖南省农业科学院，湖南长沙 410125) 摘 要:杂草危害是影响水稻生产的重要问题之一，为了探究生物控草肥的控草效果及控草机理，采用大田试验研究了酱渣-烟末-稻糠三元 复配新型生物控草有机肥对水稻田杂草的防治效果;并在模拟大田环境的室内盆栽试验中检测了施用该生物控革有机肥后水层的电导率、透光 率变化。结果显示，该有机肥能有效抑制稻田杂草的生长. 640 kgl667m 施用量下45 d 后对碑草和鸭舌草的株防效分别达到77.05%和 74.12%. 鲜重防效分别达到 73.03%和 73.68;)毛。施用该生物控草有机肥后，稻田水层电导率明显高于普通有机肥处理组和空白对照组，水层透光率明显低 于普通有机肥处理组和空白对照组，差异达到显著水平。 关键词:生物除草;有机肥;稻田除草 中图分类号: S45 1.1 文献标识码:A 文章编号: 1006-060X (2015) 03-0040-03 A Biological Weeding Function-Organic Fertilizer s Impact on Paddy Water Layerand and Its Control EfIect on Weeds 1 1 1 1 1 LI Zhen-xing , LUO Kun , Lill Kai-lin , WANG Ya-hui , ZHOU Xiao-mao ,2 (1. Institute of Pesticide Science, Hurum Agric u1tura1 Unù口 ersity， Ch=gshα 410128， PRC,. 2. Hun= Academy ofAgricultura1 Sciences , Ch=圣rsha 410125, PRC) Abstract: Weed is one of the important problems in rice production. In order to explore the biological control effect and the controlled mechanism of weeding function-organic fertilizer, the change of conductivìty and transmittance on the water layer in paddy field was measured. A field experiment was carried out to confirm 出e effect ofthe weeding function-organic fertilizer weed control in rice fields. The results showed that the weeding function-organic fertilizer could effectively con位。1 weed in rice and the control efficiency to weeds was k阳than ri∞ chaff. The control effect of 9 600 k趴urr 位创阳.ent after fertilizing reached 77.05% to bamyard grass and 74.12% to sheathed monochoria herb , and weed control effect on fresh