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马铃薯夏播留种是防止马铃薯退化的有效农艺措施，夏播在我市区已有30多年的历史，而夏播留种的关键技术是种薯的安全度复。通过我们对“半地下种著冷贮库”“柞蚕半地下保种库”“小土冷窖”“土冰窖”和“冷凉处散藏法”5种贮藏技术的试验研究和比较鉴定，以“半地下种薯冷贮库”“柞蚕半地下保种库”“小土冷窖”贮藏种薯效果较为理想。每年的4~6月份的库（窖）温都能够控制在5℃以内，出库时种薯发芽率和腐烂率均不超过1％，出库时的种薯相当于入库前的鲜薯。
Summer sowing of potato is an effective agronomic measure to prevent the degeneration of potato. Summer sowing has been in my city for more than 30 years, and the key technology of summer sowing is the safety of seed potato. Through the experimental research and comparative identification of five kinds of storage technologies such as “semi-underground planting cold storage”, “tussah semi-underground preservation”, “small soil cold pit”, “soil ice pit” and “ In order to ”semi-underground seed potato cold storage“ ”tussah semi-underground preservation of species“ ”small soil cold pit" storage of seed is more ideal. Annual 4 to June of the library (pit) temperature can be controlled within 5 ℃, out of the library seed germination rate and decay rate of not more than 1%, when the storage of seed is equivalent to the storage of fresh potato .