农得时和草克星与尿素混用的应用研究

Stadies on the Enhancement Effects of Weed Control in Paddy Field by Treatmeat of Londax and NC-311 Mixed with Urea

农得时(Londax)和尿素混用显著提高杂草防除效果,农得时1/2常规剂量+尿素112.5kg/hm^2处理后9天(9DAT)获得的靶标植物矮慈菇鲜重抑制率比农得时单一处理的高3倍。草克星(NC-311)和尿素混用也具有一定的增效作用,但差异不显著。和除草剂单施相比,农得时+尿素和草克星+尿素处理后14DAT,早籼中156的株高、分蘖数和植株鲜值均显著提高,晚粳秀水11的分蘖数和植株上部鲜重也显著增加。农得时+尿素处理获得的植株地下部鲜重中156差异不显著,而秀水11显著降低。草克星+尿素处理获得的植株地下部鲜重,无论中156还是秀水11差异均不显著。

Effects of weed control have increased significantly when Londax and urea mixture were applied. 9days after the treatment of Londax of 1/2 common rate mixed with urea of 112.5 kg/ha, the control is three timesas large rate of fresh weight of Sagittaria pygmaea Miq. plant as Londax single application. 14 days after the treatment of Londax and NC-311 mitxure with were rcspectively, the plant height, tillering ability and fresh weight of Indiea Zhong156 or Japonica Xiashai 11 have incveased significantly in comparision with Londax single aplication.