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春马铃薯“五改”高产栽培技术的研究林昌庭，赵沛忠，刘赵康，赵华仙，林宇清（浙江省景宁县农业局）１前言浙江省景宁畲族自治县种植春马铃薯具有悠久的历史。１９８８年前，由于栽培技术落后，管理粗放，因此单产一直在６００～８００公斤之间徘徊，最多年面积仅有１．...
Study on High-yielding Cultivation Techniques of “Five Changes” in Spring Potatoes LIN Chang-ting, ZHAO Pei-zhong, LIU Zhao-kang, ZHAO Hua-xian, LIN Yu-qing (Agricultural Bureau of Jingning County, Zhejiang Province) 1 Introduction Spring potatoes grown in Jingning Shezu Autonomous County of Zhejiang Province have a long history. Before 1988, due to backward cultivation techniques and extensive management, yield per unit has been hovering between 600 and 800 kg, with a maximum annual area of only 1. ...