江淮地区秋马铃薯稻草覆盖栽培模式的优化

Optimization of the Straw Mulching Autumn Potato Mode in Jianghuai Area

[目的]优化江淮地区秋马铃薯稻草覆盖栽培模式。[方法]采用三因素二次回归正交旋转组合设计,研究播种密度、基肥施用量和播种期对江淮地区稻草覆盖秋马铃薯产量的影响,确定稻草覆盖秋马铃薯的最佳栽培模式。[结果]采用费乌瑞它品种马铃薯获得产量高于16320.52kg/hm2的农艺措施为:播种密度6.255万～7.050万株/hm2,施用基肥(N∶P∶K含量45%的三元复合肥)1025.4～1211.7kg/hm2,最适播种期8月17～21日。影响产量的主要因子是播种时期,其次是播种密度,最后是基肥用量。[结论]该研究可为江淮地区秋马铃薯生产提供理论参考。

[Objective]The aim was to optimum straw mulching autumn potato production mode in Jianghuai Area.[Method]Three factors quadratic orthogonal rotation design was used to investigate the effects of planting density,base manure fertilizer,and seeding time on the yield of straw mulching autumn potato production in Jianghuai Area and deterine the best straw mulching fall potato cultivation model.[Result]The tesults showed that the varieties of potato Favorita has acquired more than 16 320.52kg/1hm^2 of agronomic measures in fall were follows：sowing density of 6.255-7.050×104/hm^2,basic fertilizer of 1 025.4-1 211.7 kg/hm^2（N∶P∶K content of 45% NPK）,optimum sowing time of the August 17th-21st.The main factor affecting the yield is planting time,followed by the planting density,third is base fertilizer doasage.[Conclusion] The study will provide theoretical reference for production of fall potatoes in Jianghuai Area.