叶菜型甘薯薯苗越冬密度、种苗、底肥及栽插期的优化  

Optimization of the Overwintering Planting Density, Germchit,Base Fertilizer and Transplanting Period for Leaf-Vegetable Sweet Potato Seedlings

作　　者：徐茜 黎华 宗洪霞 但方 王祖民 

机构地区：[1]重庆三峡农业科学院,重庆万州404155 [2]万州区白土镇农业服务中心,重庆万州404025

出　　处：《作物杂志》2016年第6期142-147,共6页Crops

基　　金：重庆市科委"薯类作物专用新品种创制与清洁安全加工"主题专项项目(cstc2015shms-ztzx80004)

摘　　要：为优化叶菜型甘薯薯苗越冬的栽培技术,提高叶菜型甘薯薯苗越冬栽培留种供应的种源量,突破留种障碍,采用L_9(3~4)正交试验设计,研究了种植密度、种苗、底肥及栽插时期对鄂菜薯1号薯苗越冬性状及产量的影响。结果表明:T9组合为本试验最优薯苗越冬组合,即密度28.5万株/hm^2、茎尖苗栽插、底肥(45%复合肥750kg/hm^2+过磷酸钙450kg/hm^2),栽插期9月下旬,第二年3月至6月中旬薯苗产量可达88 500kg/hm^2以上。To investigate the optimum cultivation technology for leaf-vegetable sweet potato seedlings through the whole winter and break the obstacle to reserve the source supply, L9（34） orthogonal experiment design was used to study the plant density, seedling number, fertilizers and transplanting time of Ecaishu No. 1 and the therefrom impact on production. The results showed that the combination of T9 was the best combination of the experiment, with a plant density of 2.85×10^5 plant/hm^2, seedling planting type, fertilizers （45% compound fertilizer 750kg/hm^2＋calcium superphosphate 450kg/hm^2）, and transplanting time in late September. In the next year, the yield of sweet potato seedlings reached more than 8.85× 10^4kg/hm^2, from March to mid-June.

关 键 词：叶菜型甘薯 密度 种苗 底肥 栽插期 越冬性状 产量 

分 类 号：S531[农业科学—作物学]