福建农业学报2017，Vol.32Issue(12)：1291-1297,7.DOI:10.19303/j.issn.1008-0384.2017.012.004
马铃薯原原种生产中基质、密度和施肥因子的优化
Optimization of Substrate Formulation, Planting Density and Fertilization for Producing Potato Original Cultivar Seeds
摘要
Abstract
Virus-free test-tube seedlings of a potato cultivar,Quanyun No.4,were used in this study to analyze and optimize the cultivation conditions for producing original cultivar seeds.A complete split-plot experimental design was applied for the optimization on substrate formulation,planting density and fertilization in the experiment.The results indicated that the 3 factors were highly significant in affecting the seed yield,marketable tuber production and economic indicators.The chlorophyll content,leaf area indices,tuber yield and relevant economic considerations of the seeds grown on Formula A4 (substrate in a ratio of vermiculite ∶ perlite ∶ sand =1 ∶ 1 ∶ 2) were the highest among all tested media.The planting density B1 with a row spacing of 0.05 m × 0.10 m effectively increased the yields on seeds and marketable potatoes with an improved financial return.The Fertilization C2 applying fertilizer twice weekly increased the seed production while maintained a high percentage of marketable potatoes harvested.An extremely significant interaction among the substrate formulation,planting density and fertilization frequency was observed.In the end,the conditions for an efficient production of potato cultivar seeds would include a culture substrate consisting of vermiculite and sand in 1 ∶ 1 ratio,a planting spacing between rows of 0.05 m×0.10 m,and fertilizer application twice a week.关键词
马铃薯/基质/种植密度/施肥次数/原原种Key words
potato/substrate/planting density/fertilization/original cultivar seeds分类
农业科技引用本文复制引用
林金秀,吴玥琳,凌永胜,周婷,陈品品..马铃薯原原种生产中基质、密度和施肥因子的优化[J].福建农业学报,2017,32(12):1291-1297,7.基金项目
福建省科技创新平台建设项目(2013N2002) （2013N2002）
福建省科技计划重大专项(2017NZ0002) （2017NZ0002）
福建省科技计划星火项目(2017S0021) （2017S0021）
