稻田常用化学除草剂对水稻生长及土壤生态影响的初步研究  

Preliminary Explanation about Effect of Chemical Herbicide on Rice Growth and Soil Ecology

作　　者：陈先茂[1] 彭春瑞[1] 关贤交[1] 邓国强[1] 叶永钢[1] 

机构地区：[1]江西省农业科学院土壤肥料与资源环境研究所,江西南昌330200

出　　处：《江西农业大学学报》2009年第5期850-854,共5页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家科技支撑计划耕地质量调控关键技术研究与示范项目(2006BAD05B09);国家科技支撑计划项目(2007BAD87B08);国家绿色农业科学研究与示范项目资助(2007-8)

摘　　要：化学除草是目前稻田草害防治的重要手段之一,针对稻田化学除草剂使用量大且年趋增多的趋势,开展了稻田常用化学除草剂对水稻生长及土壤生态的影响研究,研究表明:稻田常量施用化学除草剂可有效地防除杂草、减轻杂草的危害,对水稻生长无明显不良影响,但加量施用在一定程度上会影响水稻的分蘖及产量;另外,化学除草剂的使用在一定程度上还降低了土壤中微生物的数量及土壤中一些酶的活性,从而影响了稻田土壤质量及供肥能力,施药量越大影响越大。Using chemical herbicide for weed control in paddy field is an important method in practice at present, In view of the trend that large amount of chemical herbicide is used in paddy field and the amount is increasing year by year, the effects of five kinds of chemical herbicide on rice growth and soil ecology were studied. The result indicated that proper amount of chemical herbicide could control weeds growth and reduce its harm to rice effectively, moreover, its effects on rice growth were not obviouse. But excessive amount of herbicide could influence to some extent the number of rice tillers and yield, even reduce soil microbial quantity and the activity of enzymes in soil, thus reduce the soil quality and its capacity of supplying nutrients, the greater amount of herbicide, the greater effect.

关 键 词：化学除草剂 水稻生长 土壤微生物 土壤酶 

分 类 号：S451.21[农业科学—植物保护]