摘要
试验结果表明， 旱育秧不论是手插或抛栽， 与水育秧手插、抛栽比较， 一生不同生育期均有发根力优势， 这种优势至少延续到水稻灌浆初期， 且不同季别均有显著表现。由于旱育秧根系活力强， 地上部生育好， 表现植株增高， 一生总叶片数增加； 前期分蘖势强， 成穗率高； 不同生育期的叶面积系数大， 干物质积累多； 后期单株绿叶多， 抗早衰， 生长清秀， 青秆黄熟； 穗型增大， 每穗实粒数增加， 谷草比高， 因而获得增产。
Results of field trials showed that rice seedlings nursed by dry nursing(RSNDN)had an advantage of rooting at different stages in their whole growth period,reguadless of transplant manner of the rice seedlings,as compared with those by wet nursing,that the advantage could last at least up to early fillering stage in different rice cropping(both early and late rice crop ). Due to the RSNDN rooting vigor,growth and development of aerial part was fine,which was characterized by their taller plant height,increase of total leaf number in whole growth period,vigorously tillering at early tillering stage,larger LAI at different stages,more dry matter accumulation,more green leaf number at late stages,resistance to early senescense,growing well,green culm with yellow spikllets at ripening,larger panicle,more grain number per panicle,higher ratio of grain/straw and high yielding,compared with those by wet nursing
出处
《浙江农业科学》
北大核心
2000年第1期1-5,共5页
Journal of Zhejiang Agricultural Sciences
基金
浙江省科技攻关项目!(952206A)
关键词
水稻
旱育秧
发根力
生育特性
植株
育苗
rice
rice seedling nursed by dry nursing
rooting
characteristics of growth and development
