南方农业学报2016，Vol.47Issue(10)：1683-1687,5.DOI:10.3969/jissn.2095-1191.2016.10.1683
不同遮荫处理对荞麦幼苗生长的影响
Effects of different shade treatments on seedling growth of buckwheat
摘要
Abstract
Objective]In order to give some suggestions on buckwheat resources protection and development,the pre-sent study was conducted to screen suitable shading conditions for different buckwheat varieties. [Method]Two common buckwheat varieties(Fengtian 1 and Chifeng 1) and two tartary buckwheat(Chuanqiao 1 and Xiqiao 1) were taken as ma-terials,and their survival seedling rates and seedling growth indexes were determined under four different shade treatments [0%(full exposure),30%shade degree,75%shade degree and 91%shade degree]. [Result]Results showed that,four dif-ferent shade treatments were ranked in order of survival seedling rates of four buckwheat varieties:30%shade degree>75%shade degree>0%(full exposure)>91% shade degree,with significant difference(P<0.05,the same below). Common buck-wheat under 75% shade treatment and tartary buckwheat under 91% shade treatment showed the highest seedling height and stem height,the biggest stem and root girth,and the longest taproot,and buckwheat under 0%(full exposure) shade treatment showed the lowest seedling height and stem height,the smallest stem and root girth,and the shortest taproot. Four different shade treatments were ranked in order of seedling biomass of four buckwheat varieties:30% of shade degree>0%(full exposure)>75% shade degree>91% shade degree. Under 30% shade treatment,the dry weights of stem,leaf and overground part were significantly higher than those under other treatments. [Conclusion]Moderate shade can be conducive to seed germination and seedling growth of buckwheat. 30% shade degree is selected at seedling stage. 75% and 91%shade degree are good for common buckwheat and tartary buckwheat in the late seedling growth ,respectively.关键词
荞麦/遮荫度/出苗率/生长指标/生物量Key words
buckwheat/shade degree/seed germination/growth index/biomass分类
农业科技引用本文复制引用
郭肖,胡丽雪,赵钢,向达兵..不同遮荫处理对荞麦幼苗生长的影响[J].南方农业学报,2016,47(10):1683-1687,5.基金项目
国家自然科学基金项目（31401330）；“十二五”国家科技支撑计划项目（2014BAD07B04）；国家现代农业产业技术体系建设专项项目 （）
