摘要
稗草是水稻田中最常见的禾本科杂草,对生态因子的竞争非常激烈,综述了近年二者竞争关系的研究结论。育苗移栽使水稻在田块中占有生育期优势从而提高竞争能力,抗草育种、密度调节及高秆大冠层品种的应用等育种和栽培手段可以提高水稻的竞争力;数学模型的应用,量化了二者竞争关系的大小,在直播稻田中,二者竞争关系研究中要注意稗草的防控必须及时有效。
Barnyard grass is one of the common gramineous weeds in paddy field.And they can compete for ecological factors with rice.This paper reviews the research status of the competitive relationship of rice and barnyard grass at home and abroad.Rice can take advantage of the growth stages by seedling and transplantation.Cultivation and breeding methods such as weed-suppressing rice breeding,density control and varieties of high straws and large panicle,which can improve the competition of rice.Mathematic models are used to quantify the competition between rice and barnyard grass.Control strategies must be in time and effective in direct seeding rice field.
出处
《中国农学通报》
CSCD
北大核心
2011年第15期259-262,共4页
Chinese Agricultural Science Bulletin
基金
辽宁省科学技术厅科技攻关项目(2008201003)
辽宁省稻作所青年人才基金项目(DZS-2009-2)
关键词
水稻
稗草
种间竞争
rice
barnyard grass
interspecific competition
