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病原经鉴别寄主接种鉴定,明确为南方根结线虫生理型1、2号,1号为优势种.经接种测试,明确35种植物感染该线虫,棉花、花生、小麦不感染.弄清了南方根结线虫在成都地区郁金生长期中发生5代,主要以卵块越冬,5月大部分潜居于11～40厘米土层内,后随温度升高而上升,7月下旬上升至表土层(0—10厘米)活动为害,前作菜地土中幼虫最多,连作地次之,水稻、郁金轮作地最少.采用水稻,郁金一年轮作制对线虫的防效可达90%左右,用55℃10分钟,45℃50分钟温汤侵种,均可杀死姜种上的病原线虫.在重病地区,推行耐病品种绿丝,其病指较黄丝,黄白丝低三分之一以上,同时产量也高于后述两个品种.
The pathogen was identified by the host inoculation identification, clear for the root-knot nematode physiological type 1, 2, 1 as the dominant species.After inoculation test, clear 35 kinds of plants infected with the nematode, cotton, peanut, wheat is not infected. Root-knot nematodes occurred in the tulip growth stage in Chengdu for 5 generations, mostly overwintering in egg masses, mostly in 11-40 cm soil layers in May and then rising with temperature, rising to the top soil layer in late July 0-10 cm) activities of the damage, the former cropland soil larvae most, continuous crop followed by rice, tulip to make the least.Using rice, tulip annual rotation of the nematode control effect of up to 90% with 55 ℃ for 10 minutes, 45 ℃ for 50 minutes warm soup invasion, can kill ginger on the pathogenic nematodes in seriously ill areas, the implementation of disease-resistant varieties of green silk, the disease refers to the yellow silk, yellow and white silk more than one-third, At the same time the yield is also higher than the two varieties mentioned later.