1　前　言马铃薯茎尖脱毒试管苗扩繁培养是一项投资大、成本高的工作。在脱毒种薯的生产中 ,我地区主要以扦插移栽为主 ,这样需要数以万株的健康茁壮的试管苗。以往我们采用蒸馏水做培养基 ,这样不但用量大 ,也浪费水。本着降低生产成本 ,又能生产壮苗的目的 ,我们进行了用雨水 1 Introduction potato tip virus-free plantlets proliferation is a large investment, high cost of work. In the production of virus-free seed tubers, the area is mainly cuttage transplanting, which requires tens of thousands of healthy and robust plantlets. In the past we used distilled water to make medium, so not only the amount of large, but also a waste of water. With the goal of reducing production costs and producing strong seedlings, we conducted rainwater harvesting