设施土壤次生盐渍化和连作障碍日益严重,岩棉无土栽培是解决诸类问题的途径之一。以“双抗1号”番茄品种为试材,在日光温室条件下,研究了岩棉块育苗期间不同相对持水量(30%、40%、50%、60%、70%)对番茄幼苗株高、茎粗、鲜重、干重的影响。结果表明:较高的岩棉块持水量对番茄幼苗株高有明显的促进作用;育苗结束时不同持水量处理对番茄幼苗茎粗的影响差异不显著;较高持水量处理能显著增加番茄幼苗地上部鲜重和干重,能明显促进根系生长,增加岩棉育苗块底面的根系密度。初步建议岩棉块培育番茄苗时宜采用60%~70%相对持水量。 Secondary soil salinization and continuous cropping obstacles in facilities are becoming increasingly serious. Soilless culture of rock wool is one of the ways to solve various problems. The effects of different relative water holding capacity (30%, 40%, 50%, 60%, 70%) on tomato yield were studied under sunlight greenhouse conditions using “Shuang Kang 1” Seedling height, stem diameter, fresh weight, dry weight. The results showed that the higher water holding capacity of rock wool blocks could significantly promote the plant height of tomato seedlings. The effect of different water holding capacity on the stem diameter of tomato seedlings did not have significant difference at the end of seedling raising. The higher water holding capacity could significantly increase tomato seedling Ground fresh weight and dry weight, can significantly promote the root growth, increase rock root nursery nursery stock root density. Initial recommendations rock nugget nurturing tomato seedlings should be used when the relative water content of 60% to 70%.