摘要
冬季期间通过人工调控气温和土壤水分研究高温(30/25℃)、低温(冬季自然温)、高温(80％～90％F、C)和干旱(40％～50％F、C)对甜橙成花的单独与交互作用。低温或干早都能单独地诱导暗柳橙成花,但干旱因子在促花的同时有减弱叶片形成的效应,而低温因子主要表现为促进花的数目。高温加高湿导致不停顿的营养生长和不成花。足够的低温和适度的干旱有利于形成有叶花枝,因而有利于翌年之丰产,过度干旱导致形成无叶花枝,恶化花枝质量。
Investigations have been carried out on the single and interrelated effects of high (30/25℃) and low (natural winter temperature, avg. temp. = 17. 8℃) air temperatures, as well as high (80%-90%F. C. ) and low ( 40% - 50%F. C) soil moistures. Low temperature or low moisture alone induced floral formation. Low moisture, however, showed the effect of reducing leaf formation while promoting floral formation, whereas, low temperature was mainly effective in increasing flower number. High temperature plus high moisture led to continuous vegetative growth and no flotal formation. It is considered that adequately low temperature in conjunction with mild drought will lead to the formation of more leafy inflorescences and thus favouring high yield in the following season. Excessive drought could result in higher percentage of leafless inflorescences, a worsening of flower quality, which are prone to lower fruit set.
出处
《华南农业大学学报》
CAS
CSCD
1991年第4期58-61,共4页
Journal of South China Agricultural University
基金
农业部"七.五"重点科研项目
关键词
甜橙
花芽分化
花序
温度
水分
Sweet orange
Floral formation
Inflorescence types
Air temperature
Soil moisture
