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薄荷是我市重要的特种经济作物之一.油菜套种薄荷是我市沿海旱粮地区推广的一种高效种植模式,但在薄荷生产中受杂草危害,一般减产在20%～50%,同时还影响薄荷油的质量.以前多采取人工除草,用工多、成本大,如头刀薄荷(夏季第一次收割)须除草2～3次,二刀薄荷(霜降前第二次收割)须除草3～4次,若遇多雨年份,人工除草不但用工增加,而且贻误季节,极易造成草荒.为寻求薄荷田杂草的防除技术,1995年以来,我们在防除油菜套种薄荷田杂草方面进行了一系列试验、示范、调查,初步掌握了本地薄荷田杂草的发生特点,摸索出一套杂草化除技术.目前已在全市推广应用,覆盖率在90%以上,现报道如下.
Peppermint is one of the important specialty cash crops in our city.Red rapeseed moth is an efficient planting mode promoted in the coastal ravines of our city, but it is harmed by weeds in mint production, and the yield is reduced by 20% ~ 50% But also affect the quality of peppermint oil.In the past to take more artificial weeding, labor and more costly, such as head knife peppermint (the first harvest in summer) to be weeded 2 to 3 times, two knife mint (before the second harvest) 3 to 4 times, in case of rainy years, artificial weeding not only increased labor, but also delaying the season, can easily lead to grassland shortage .In order to seek peppermint weed control technology, since 1995, we are in the control of weed rape intercropping weed fields A series of experiments, demonstrations and surveys have initially mastered the occurrence characteristics of weeds in local peppermint fields and worked out a set of weed-removing technologies, which have been popularized and applied in the whole city at a coverage rate of over 90% and are reported as follows.