鄂马铃薯5号脱毒原原种种植密度及施肥量最佳水平组合  

Optimal Planting Density and Fertilizer Application for Elite Seed production from Pre-Elite of cv. Emalingshu 5

作　　者：彭承界 

机构地区：[1]湖南省湘西州农业局粮油站,湖南吉首416000

出　　处：《中国马铃薯》2012年第4期222-225,共4页Chinese Potato Journal

摘　　要：马铃薯脱毒种薯是目前国内外解决马铃薯品种退化、产量降低、品质下降的最有效措施。由于原原种生产成本高且数量有限,生产中需要进行原种扩繁和一、二级生产种薯繁育。为研究脱毒马铃薯原原种鄂马铃薯5号的高产栽培技术,本研究采用正交试验设计,对扩繁过程中种植密度、N、P2O5、K2O施用量进行研究。结果表明:种植密度为120 000株/hm2,纯N施用量为180 kg/hm2,P2O5施用量为90 kg/hm2,K2O施用量为330 kg/hm2是原种扩繁生产中各因素最佳水平组合。Production of potato virus-free seed potato at home and abroad is an effective measure to solve the problems of degradation, low yield, and decline in quality. Because the production of pre-elite seed is highly costive and limited in amount, elite seed needs to multiply, which, in tum, is used to produca certified seed Ⅰ and Ⅱ. In this research, an orthogonal experiment design was used to study the effects of plant density and the application rate of N, P2O5 and K2O on elite seed production of cv. Emalingshu 5 using pre-elite seed as panting material. The results indicated that planting at 120 000 plants/ha and application of N, P2O5 and K2O at 180, 90 and 330 kg/ha, respectively, would give the highest yield.

关 键 词：马铃薯 原种扩繁 栽培技术 

分 类 号：S532[农业科学—作物学] S352.3