基于生物量和养分累积量的花生品种生态适应性评价

为挖掘产量性状好、养分利用效率高、生态适应性广的优良花生品种，在冀中低平原和山前平原两个生态区分别测定了19个花生品种的16个生物量和养分累积量指标，通过主成分分析对不同品种在不同生态区的表现进行了综合评价.按照主成分对应特征值大于1的原则提取主成分，将16个主要性状指标综合成4个主成分，可代表花生生物量和养分利用性状85%左右的原始信息量.结果表明： 不同花生品种在不同生态区域的产量和养分利用效率存在较大差异.根据生态适应性将19个花生品种分为2类，生态适应性广的品种又分为产量水平和养分利用效率高、中、低3类，其中豫花9719、冀花0212-4、潍花10号、豫花15号、濮花28号和冀花10号为生态适应性广、养分利用效率高、产量水平也较高的品种.

Ecological adaptability evaluation of peanut cultivars based on biomass and nutrient accumulation.

To identify the good peanut cultivars with the properties of high yield, high nutrient use efficiency and wide adaptability, 19 selected peanut cultivars were planted in the low champaign area and piedmont plain area of Hebei Province. By using principal component analysis, the adaptability of these 19 cultivars was evaluated for different ecological regions through comparing their 16 main traits including biomass and nutrient parameters. According to the critical value of principal component (>1.0), the 16 biomass and nutrient characteristics were integrated into 4 principal components which accounted for 85% of the original information. The results indicated that there were obvious differences in yield and nutrient use efficiency for the peanut cultivars in different ecological regions. The 19 peanut cultivars were classified into 2 groups according to their ecological adaptability, and the cultivars from the group with wide adaptability could further be divided into 3 categories according to their yield and nutrient use efficiency. Among these cultivars, Yuhua 9719, Jihua 0212-4, Weihua 10, Yuhua 15, Puhua 28 and Jihua 10 were selected as the better peanut cultivars with the properties of high yield, high nutrient use efficiency and wide adaptability.