蕃茄植株周期性暴露于286μgm~(-3)的SO_2中(每隔两天暴露3小时,达75天),诱发出叶患轻度黄萎病.在571μgm~(-3)较严重的褐化黄萎病在叶面上蔓延.在受根结线虫Meloidogyne incognita race I(Mi)影响又暴露于SO_2的植株.尤其是后接种和相伴接种暴露的,这些症状出现的较早,且非货明显.Mi和SO_2混合或SO_2皆显著减少植物生长的各种参量.分别暴露286和571μgm~(-3)SO_2并存在Mi相伴和后接种条件时,SO_2和Mi之间表现协合作用(正相关).在其它处理中,可观察到拮抗作用(负相关).然而,在个别处理中,也见到SO_2和Mi的累加效应.在SO_2的两个浓度下,根结(瘿结)硬度增加.在286μgm~(-3)相伴接种Mi的量(卵团量)是增加,571μgm~(-3)是抑制.暴露SO_2和Mi混合或Mi,气孔的数目和大小减少,但叶的背腹两面表皮的毛状体数量和长度增加.单独暴露571μgm~(-3)SO_2的或在前、后和相伴接种暴露286或571μgm~(-3)的植株,气孔器显著增宽.气孔开口对于叶损伤和生长、产量及叶色素减少等量有直接关系的. Tomato plants were periodically exposed to SO 2 at 286 μgm -3 for three days every two days for 75 days, causing leaves with mild Verticillium wilt.When 571 μgm -3 was more severe brown Verticillium wilt spreads on the foliage, and plants exposed to SO_2 are affected by root-knot nematode Meloidogyne incognita race I (Mi) .Especially after post-vaccination and concomitant exposure, these symptoms appear earlier and are not Obviously.Mi and SO_2 mixed or SO_2 all significantly reduced the plant growth parameters.When exposed to 286 and 571μgm -3 SO_2, respectively, there was a synergistic effect between SO_2 and Mi (positive ). In other treatments, antagonism (negative correlation) was observed, however, in individual treatments, the cumulative effect of SO 2 and Mi was also observed. At both concentrations of SO 2, root knot (The amount of ova) was increased when inoculated with 286 μg m -3, while 571 μg m -3 was inhibited.The number and size of stomata were decreased when SO 2 and Mi were mixed or Mi was exposed, but the leaf dorsal The number and length of trichomes on both sides of the abdomen increased.After exposing 571μgm -3 SO_2 alone or exposing 286 or 571μgm -3 to the anterior, posterior and accompanying inoculation, Significantly widened. Damage stomatal opening and leaf for growth, yield and leaves equal amounts of dye is directly related to the reduction.