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对连作８年、４年和２年的大棚番茄的根系活力及其品质进行研究。其结果表明，连作２年和４年的大棚番茄根系活力无显著差异，而连作８年与２和４年的大棚番茄根系活力分别达到α＝０．０１和α＝０．０５的显著水平。对各连作年限的不同时期的根系活力研究结果表明，连作８年与２和４年的大棚番茄根系活力的差异主要表现在采收初期和采收末期。对不同连作年限的大棚番茄进行品质分析，结果表明，连作８年的大棚番茄品质明显变劣。
The root vitality and quality of tomato cultivated in greenhouse for 8 years, 4 years and 2 years were studied. The results showed that there was no significant difference in root activity between two consecutive years and four years in greenhouse. The root activity of tomato in two-year-old and two-year and four-year greenhouse reached α = 0.01 and α = 0.05, respectively. The results of root activity in different periods of continuous cropping showed that the difference of root activity of tomato in greenhouse with 8 years and 2 and 4 years of continuous cropping mainly showed in early harvest and late harvest. The quality analysis of tomato in greenhouse with different continuous cropping years showed that the quality of tomato in greenhouse was obviously worsened after continuous cropping for 8 years.