生物制剂降解氯嘧磺隆残留对水稻根系及产量性状的影响

采用小区试验模拟不同水平氯嘧磺隆残留条件下，不同生物制剂用量对水稻根系及产量性状的影响。试验结果表明：较低浓度的氯嘧磺隆即可对水稻产生药害。生物制剂能够显著降解≤0.5mg/kg残留氯嘧磺隆，修复污染土壤，促进水稻根系生长，增加水稻穗粒数、每穴穗数，提高产量。当氯嘧磺隆为6mg/kg时，生物制剂已不能降解其残留药害。对各项指标进行综合判断可知：生物制剂最佳经济施用量为30kg/hm2。

Effect of Bio-fertilizer Degrade Chlorimuron-ethyl Residue on Rice Root and Yield Components

Different chlorimuron-ethyl residue, the effects of different dosages of bio-fertilizer on the rice roots and yield components were simulated in the plot experiment. The results showed: the rice would be damaged by low chlorimuron-ethyl concentration. When the amount of chlorimuron-ethyl≤0.5mg/kg, the bio-fertilizer could degrade it significantly. It could impair the polluted soil, promote the growth of root, increase the grains per panicle of rice, panicle number of per hill and increase the yield. When the chlorimuron-ethyl amount was 6mg/kg, bio-fertilizer could not degrade the herbicide. From the comparison of every treatment, the best economy amount of bio-fertilizer was 30kg/hm2.