中国农业大学学报2024，Vol.29Issue(2)：91-98,8.DOI:10.11841/j.issn.1007-4333.2024.02.09
辣椒种苗质量分级与壮苗指数构建
Quality grading of pepper seedlings and construction of seedling index
摘要
Abstract
To comprehensively and accurately evaluate the quality of pepper seedlings,the K-means clustering method and comprehensive evaluation method were used to study the 50 day old pepper seedlings of two caltivars,'Early Mature Red Line Pepper'and'Jia chang No.6'.The results indicated that:The comprehensive evaluate index of both'Early Mature Red Line Pepper'and'Jia chang No.6'ranges from 0.333 to 0.996;The principal component analysis divided 11 indicators employed in this study into 2 types of principal components,with a cumulative contribution rate of 75.8％.Correlation analysis was conducted between the comprehensive evaluation index and the strong seedling index,and four models with high correlation were selected for the seedling index,which were'Dry weight of underground partXScattered lump rateX Dry weight of whole plant','Fresh weight of underground part × Scattered lump rate X Dry weight of whole plant','Fresh weight of whole plant× Scattered lump rate× Dry weight of whole plant','SPAD×Scattered lump rate×Dry weight of whole plant',and the correlations were 0.673,0.690,0.657 and 0.701,respectively.In conclusion,the optimal seedling strength index model is"Fresh weight of underground part×Scattered lump rateXDry weight of whole plant".Based on the selected robust seedling index model,it was concluded that:The comprehensive evaluation index≥0.813 and the strong seedling index≥1.255 belongs to high-quality seedlings(Grade Ⅰ);The comprehensive evaluation index range is 0.507-0.813,and the strong seedling index range is 0.102-0.682,which belongs to qualified seedlings(Grade Ⅱ);The comprehensive evaluation index≤0.507 and the strong seedling index≤0.102 belongs to weak seedlings(Grade Ⅲ).In a word,this study provides a high-quality seedling evaluation system and a basis for seedling grading for industrial seedling and mechanized operations of fruity vegetables or other vegetables.关键词
辣椒幼苗/散坨率/壮苗指数/主成分分析Key words
pepper seedling/scattered lump rate/seedling index/principal component analysis分类
农业科技引用本文复制引用
潘佳琪,彭铁梨,贾媛婕,胡晓辉..辣椒种苗质量分级与壮苗指数构建[J].中国农业大学学报,2024,29(2):91-98,8.基金项目
陕西省重点研发计划项目(2022ZDLNY03-11) （2022ZDLNY03-11）
国家现代农业产业技术体系项目(CARS-23-D06) （CARS-23-D06）
中央引导地方项目(XZ202202YD0002C) （XZ202202YD0002C）
