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对黑龙江省大庆市温室内的番茄根结线虫进行形态鉴定和苗期抗病性鉴定技术研究，结果表明该线虫为南方根结线虫；采用接种苗龄３０ｄ（天），接种深度１０ｃｍ，接种量５０００条·株－１，接种天数５０ｄ（天）为最佳组合。用该鉴定方法对１８份番茄材料进行苗期抗根结线虫病鉴定，筛选出免疫材料２份，高抗材料４份，强抗材料４份，中抗材料２份，微抗材料１份，其余５份为易感材料。
The morphological identification and seedling disease identification of tomato root knot nematode in the greenhouse of Daqing City in Heilongjiang Province showed that the nematode was Southern root-knot nematode. The inoculated seedling was 30 days old and inoculation depth was 10 cm The amount of 5000 · strain -1, inoculation days 50d (days) for the best combination. Identification of root-knot nematodes in 18 tomato seedlings by this identification method showed that 2 kinds of immune materials, 4 high-resistant materials, 4 strong-resistant materials, 2 medium-resistant materials, 1 micro-resistant material, The remaining 5 are susceptible materials.