草业学报2018，Vol.27Issue(4)：69-78,10.DOI:10.11686/cyxb2017329
岷县不同茬口对当归苗栽生长及抗病性的影响
Effect of various crop residues on growth and disease resistance of Angelica sinensis seedlings in Min County
摘要
Abstract
Traditional seedling nursery methods relying on uncultivated land for Angelica sinensis have caused serious soil erosion and debris flow.A study has been undertaken to explore the use of crop stubble land for the production of A.sinensis seedlings.Using the stubble fields of Triticum aestivum,Astragalus membranaceus,Solanum tuberosum and A.sinensis crops in Min county of Gansu province,seedlings were cultivated and their growth and resistance indicators measured.Index weights were calculated using principle component analysis and the membership function method was also used to explore the effect of crop stubbles on the seedling nursery.Results showed that the aboveground growth of seedlings varied significantly with different crop stubbles.Seedlings cultured in wheat and Astragalus residues showed the strongest growth indicators,with strong roots and growth power resulting in excellent individual plant quality with a low root incidence rate and disease index.Seedlings produced under potato and Angelica residues were highly affected by seasonal variations,resulting in high death rates and elongation of the growth period.The oldest and smallest seedlings occurred in the continuous cropping system and the potato residue,which had over 36.7％ disease rates.According to the comprehensive index,the residues were ranked as Astragalus (0.7840)＞wheat (0.7816)＞Angelica (0.4731)＞potato (0.1656).Seedlings produced in potato residue showed the highest death rate and seedlings in Angelica residue exhibited the highest incidence rate.These results suggest that the residues of wheat and Astragalus crops provide the most suitable soil resources for cultivating Angelica seedlings in Min county.关键词
当归/农茬口/育苗/发病率/综合指数Key words
Angelica sinensis/crop residues/seedling cultivation/incidence rate/comprehensive index引用本文复制引用
金彦博,郭凤霞,陈垣,白刚,袁洪超,梁伟..岷县不同茬口对当归苗栽生长及抗病性的影响[J].草业学报,2018,27(4):69-78,10.基金项目
国家自然科学地区基金(31360317,31560175),国家中医药管理局当归等4种中药饮片标准化项目(ZYBZH-Y-GS-11),当归GAP基地建设,中药材当归航天育种项目(XDZY-2017-115),全国第四次中药资源普查甘肃(试点)岷县和宕昌县普查(201207002-02,2013GSZYZYPC-02)和甘肃农业大学教学研究项目资助. （31360317,31560175）
