马铃薯新品种‘定薯4号’丰产性、稳产性、适应性 及品质分析

为了全面了解定薯4号的生产利用价值，以2013～2014年甘肃省马铃薯品种区域试验与品质检测数据结果为依据，通过产量、变异系数和回归系数对该品种和对照品种的丰产性、稳产性、适应性和品质进行分析比较。结果表明，定薯4号属于丰产性、稳产性和适应性强，淀粉加工和鲜食品质佳的优良品种，在土壤肥力中等的雨养农业区增产潜力极高。

Analysis of the Performance and Stability of Yield,Adaptability and Quality of the New Potato Variety 'Dingshu 4'

In order to fully evaluated the production and utilization value of Dingshu No.4, based on the results of regional test and quality test data of potato varieties from 2013 to 2014 in Gansu province, the yield, variation coefficient and regression coefficient were used to analyze and compare the high yield, stable yield, adaptability and quality of the variety and the control. The results showed that the Dingshu No.4 was an excellent variety with high yield, stable yield and adaptability, and excellent starch processing and fresh food quality. The variety had a high main effect value in yield, a small coefficient of variation in the interaction between varieties and sites, and a regression coefficient of yield and environment less than 1.There was very high potential of increasing yield for the variety in the rainfed agricultural area with medium soil fertility.