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近日来,笔者在数个乡镇调查,大家普遍反映今年的稻田除草效果明显,推广应用面积也比较大。但在大面积应用中也出现了一些不容忽视的问题,归纳起来主要有以下几个方面:1.草相发生变化,恶性杂草呈上升趋势多年来,相当一部分稻区稻田杂草,选用除草剂品种单一,如部分移栽、抛秧稻田田块一直选用丁草胺、丁苄等,致使稗草、扁杆蔗草、千金子、水花生等恶性杂草上升明显,成为不少地区新的优势草种,急需遏制其上升势头。
In recent days, I conducted surveys in several villages and towns. We all generally reflected the obvious effect of this year’s weeding on paddy fields and their popularization and application area are relatively large. However, there are some problems which can not be neglected in the large-area application. The main aspects are summarized as follows: 1. The change of the grass-like phase and the rising of the vicious weeds Over the years, a considerable part of the weeds in the paddy rice fields have been weeded by weeding A single species, such as part of the transplanting, throwing rice paddy field plots have been selected butachlor, butyl benzyl, etc., resulting in barnyard grass, flat bar cane grass, Qianjinzi, peanut and other malignant weeds significantly increased, becoming a lot of new areas The advantage of grass species, the urgent need to curb the upward trend.