摘要
试验采用L16(2×43)正交设计安排试验,研究三因素四水平和一因素两水平(即:定植密度4种、不同KH2PO4用量4水平、不同多效唑浓度4水平、不同品种2个)对秋季马铃薯原原种(小薯)生长和产量及个数的影响。结果表明,喷施多效唑有显著降低株高的作用,除CK外,不同浓度对植株的矮化效果差异不显著。产量通径分析表明,基质栽培中的株高对产量、主茎粗对产量的正效应均较小;不同密度之间的产量有极显著性差异;不同KH2PO4用量存在不同水平的显著性差异;不同多效唑浓度之间的产量没有显著性差异。E4F3G2无论是平均产量和结薯个数来说都是较好的处理组合,平均薯重最低的为2.92 g,最高的达4.39 g,大于3 g的小薯的比例占80%以上。
The study was carried out withL16（2×4^3） orthogonal design to investigate three factors with four levels and a two-level factor （ i. e. plant density of four kinds of different levels of KH2 PO4 dosage of four different concentrations of 4 MET levels, two different varieties） on autumn potato virus-free pre-basic seed production in terms of yield and the number of mini-tubers, in order to find the best treatment combination. The results showed that the substrate cultivation, spraying significantly reduced the plant height. Except CK,the dwarf effect of the different concentrations Paclobutrazol on the autumn potato had no significant differences. The path analysis showed that the positive effect of the plant height on the yield and the main stem diameter was small by the substratc culture. The yield had the very significant differences under different density and different dosage of KH2PO4 ,levels also led to significant difference of the autumn potato yield,but the yield of au- tumn potato had no obviously significant differences by different concentrations paclobutrazol. The coded FAF3G2 combination had the highest yields and the most quantity of tuber formation . In E4F3G2 combination, the lowest average tuber weight of lowest average was 2.92 g, and the highest was 4.39 g and the ratio of minitubers over 3 g exceeded 80 %.
出处
《西南农业学报》
CSCD
北大核心
2010年第2期469-474,共6页
Southwest China Journal of Agricultural Sciences
基金
国家马铃薯支撑项目(2006BAD21B00)
四川省马铃薯良繁体系建设项目资助
