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通过对新农1号狗牙根和喀什狗牙根制种田内杂草种类、频度、密度及多度进行调查和统计分析,结果表明:杂草种类达17科61种,其中菊科杂草15种,占杂草总数的24.59%;禾本科杂草13种,占杂草总数的21.31%;一年生杂草34种,占杂草总数的55.74%;多年生杂草21种,占杂草总数的34.43%。3~4月是春季杂草发生高峰期,5~8月是夏季杂草发生高峰期,主要杂草有顶羽菊、田旋花、灰藜、野西瓜苗、狗尾草、稗、反枝苋、苦苣菜,发生频度在50%以上,密度在4.25株/m2以上。
Through the investigation and statistical analysis on the species, frequency, density and abundance of weed in bermudagrass and bergamot root of Xinnong 1, the results showed that the weed species reached 17 families and 61 species, of which Compositae weed 15 Accounting for 24.59% of the total weeds; 13 species of weeds, accounting for 21.31% of the total number of weeds; 34 annual weeds, accounting for 55.74% of the total weeds; 21 perennial weeds, accounting for the total number of weeds 34.43%. March to April is the peak of spring weeds, May to August is the peak of summer weeds, the main weeds are Chrysanthemum indicum, Land spin flowers, quinoa, wild watermelon seedlings, Setaria, barnyardgrass, Amaranthus retroflexus , Sonchus vegetables, the occurrence frequency of 50% or more, the density of 4.25 plants / m2 or more.