摘要
柑桔是常绿果树,生长量大,挂果期长,周年均需消耗大量水份。虽然广东大部分地区年总降雨量达1.300—2.000mm,但因降雨不均匀,多集中在4—9月份,秋冬为旱季。特别是灌溉条件差的山地柑桔园,旱季缺水影响到产量和品质,有时甚至造成冬季大量落叶,导致来年失收。抑蒸剂的种类较多,据报道多用于作物的防寒防冻,但对柑桔防旱和减轻移植时的蒸发也有较好效果。本试验的目的是探讨在秋旱季节喷洒抑蒸剂对减轻干旱不利影响的效应。现将1983年和1984年两年的试验结果总结于下。
Orange fruits are usually retarded in growth by fall drought in Guangdong Province,especially on hill slopes where trees suffer more from moisture stress during the dry season.Mesophyll breakdown caused by drought is also the cause of serious leaf drop occurring during the winter period.Antitranspirant sprays 3 times at 10 days intervals practiced in October/November significantly prevented"Anliuchen"orange fruit growth from being retarded by fall drought Each spray is effective in reducing transpiration for a 4 days period.Spraying resulted in a delay of fruit maturation,which may account for,at least partially,the keeping of the fruits in an active state of growth for a certain period of time in comparison with the control.Antitranspirant sprays also reduced the incidence of mesophyll breakdown and leaf drop during the dry winter,thus favoured the growth and fruiting in the following year.
作者
许建楷
谢柱深
高飞飞
黄辉白
Xu Jiankai;Xie Zhushen;Gao Feifei;Huang Huibai(Department of Horticulture,Souteh China Agricultural University,Guangzhou)
出处
《中国农业科学》
1986年第4期84-87,共4页
Scientia Agricultura Sinica
