Preliminary explanation about effect of chemical herbicide on rice growth and soil ecology | 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
2009
Chen Xianmao, Jiangxi Academy of Agricultural Sciences, Nanchang(China) | Peng Chunrui, Jiangxi Academy of Agricultural Sciences, Nanchang(China) | Guan Xianjiao, Jiangxi Academy of Agricultural Sciences, Nanchang(China)
Chinese. 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。[著者文摘]
Show more [+] Less [-]English. 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.
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