摘要
甘薯"两段法"种苗繁育技术包括第一阶段育苗(冬季繁殖育苗)、第二阶段育苗(春季繁殖育苗)等内容。2013-2017年,通过大量试验示范证明甘薯标准苗产量第一阶段育苗为500万株/hm2,第二阶段育苗为150万株/hm2。育苗、扦插、上市时间较常规种植提早30 d以上,节省种薯2/3,种薯苗床育苗面积的扩繁比例达1 500倍以上;叶菜类型甘薯和鲜食类型甘薯生产应用该方法可以实现早育苗、早扦插、早上市销售;发展淀粉加工类型甘薯春季栽培,与夏、秋季栽培比较,单产增加15 t/hm2以上。示范区目前已累计推广应用8 200 hm2,示范区鲜薯平均增产24.65 t/hm2,农民增收1.23亿元。
Sweet potato two-phase seedling propagation technology includes first stage of winter nursery and second stage of spring nursery. Since 2013, a large number of experiments have proved that the output of the first stage nursery is 5 million seedlings/hm^2, while the production of the second stage nursery is 1.5 million seedlings/hm^2. Compared to the regular practice, the time of seedling propagation, transplanting and harvesting is more than 30 days earlier; it can save 2/3 of the seed potato; the ratio of nursery area and production area is more than 1 500 times. When this method is applied in leaftype sweet potato and fresh sweet potato, we can realize early seedling propagation, early transplanting and early marketing of sweet potato. Compared with the summer and autumn cultivation, the yield of spring cultivation of starch-processing type sweet potato can increase by more than 15 t/hm^2. The two-phase seedling propagation technology has been used in an area of8 200 hm^2, with an average yield increase of 24.65 t/hm^2 in the demonstration plot and a total income increase of 123 million yuan for farmers.
作者
郑守贵
邓红军
雷昌云
曹鹏
朱德平
刘云发
田先念
刘晓娜
李春红
ZHENG Shou-gui DENG Hong-jun LEI Chang-yun CAO Peng ZHU De-ping LIU Yun-fa TIAN XIan-nian LIU XIao-na LI Chun-hong(Yichang Agricultural Technology Extension Center,Yichang 443000,Hubei,China Hubei Agricultural Technology Extension Station,Wuhan 430070,Chlna)
出处
《湖北农业科学》
2017年第18期3427-3430,3443,共5页
Hubei Agricultural Sciences
基金
2014年湖北省级现代农业--红薯产业发展专项[鄂农计发(2014)20号]
2015年宜昌市重点科技研究与开发项目(A15-214)
关键词
甘薯
种苗繁育技术
“两段法”
sweet potato
seed propagation technology
two-phase
作者简介
郑守贵（1963-），男，湖北枝江人，推广研究员，主要从事农业技术推广工作，（电话）13310575363（电子信箱）1830389385@qq．com。
