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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。
Citrus is evergreen fruit trees, large growth, fruiting long, annual need to consume large amounts of water. Although the annual total rainfall in most parts of Guangdong reaches 1.300-2.000mm, it is mostly concentrated in the April-September period due to the uneven rainfall. The autumn and winter are the dry seasons. In particular, citrus orchards in mountainous areas with poor irrigation conditions, dry spells, which affect output and quality due to lack of water, sometimes result in large deciduous winters in winter, resulting in the loss of crops in the coming year. There are many types of steamer, which are reportedly used in winter and frost-free crops, but also have good effects on drought resistance of citrus and reducing evaporation during transplantation. The purpose of this experiment is to investigate the effect of spraying the anti-stealing agent on the adverse effects of drought on the autumn dry season. Now 1983 and 1984 two years of test results summarized below.