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黑木耳产业对栎木资源的依赖是该产业发展和生态文明建设不相适应的突出表现,因而选取果树替代传统栎木是促进黑木耳产业绿色生态发展的潜在途径。本文选取苹果树木屑、桃树木屑、桔树木屑和核桃树木屑为黑木耳主要栽培基质,通过菌丝生长速度、菌丝密度、菌丝色泽以及锁状联合数目等指标考核最佳果木木屑袋栽基质。结果表明,黑木耳菌丝在桃树木屑袋料基质上生长最好,生长速度（5.62 mm/d）比对照组（5.24 mm/d）提高了7.25%;菌丝生长势较好,边缘整齐、浓密、色泽洁白且锁状联合数目较多;选取78%、82%、86%和90%等4个不同桃树木屑配比,通过不同袋料基质对桃树木屑黑木耳袋栽基质进行优化研究,最佳果木黑木耳袋栽基质配方为：桃树木屑78%、米糠19%、红糖1.5%、石膏粉1%、石灰粉0.5%,此时黑木耳菌丝的生长速度(10.06 mm/d)比对照组的生长速度(5.88 mm/d)提高了71.09%,且锁状联合数目最多。本研究结果表明,桃树可替代栎木进行黑木耳袋料栽培,为黑木耳产业的绿色高质量发展奠定基础。 相似文献
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The US food retailing industry continues to concentrate and consolidate. Power in the agriculture, food, and nutrition system
has shifted from producers to processors, and is now shifting to retailers. Currently, only eight food-retailing corporations
control the majority of food sales in the United States. Expanding on previous research by Lyson and Raymer (2000, Agriculture and Human Values 17: 199–208), this paper examines the characteristics of the boards of directors of the leading food retailing corporations
and the indirect interlocks that bind the food retailers into a corporate community.
Rachel
Schwartz
is a PhD Candidate in the Department of Development Sociology at Cornell University. Her research interests are focused on
the relationship between food retailers and food consumers in the United States, especially in regards to the construction
of the concept of “choice.”
Thomas Lyson
was Liberty Hyde Bailey Professor in the Department of Development Sociology at Cornell University. His interests included
the relationship of agriculture and food systems on community economic development and population health. His most recent
book, Civic Agriculture, developed a problem-solving model for food and agriculture issues. Dr. Lyson passed away in December
2006. 相似文献
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The ten largest food and beveragecorporations control over half of the food sales inthe United States and their share may be increasing.Using data from a range of secondary sources, weexamine these corporations and their boards ofdirectors. Social and demographic characteristics ofboard members gleaned from corporate reports, thebusiness press, and elsewhere are presented.Information on interlocking corporate directorates andother common ties among members of the boards ofdirectors show that US based food and beveragecorporations are tied together through a web ofindirect interlocks. 相似文献
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以2005~2012年中国上市公司为样本构建面板数据，研究在不同股权结构的公司中连锁董事对公司绩效的影响，结果发现：连锁董事在董事会中所占比例与公司绩效呈正相关；具有丰富社会资源与经验的连锁董事在国有股权比例高的企业可带来较高的边际效应；国有股权所占比例高的企业，连锁董事在董事会中所占比例越高。 相似文献
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