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一、前言 果园防护林,是改善果园生态环境,防止冻害和干旱的一项综合性措施。关于农田防护林的气象效应及其对农作物产量的影响,国内外学者均进行过不少报道。护田林带的小气候特征也有人专门进行过研究。果园防护林的防寒防冻作用,曾引起有关单位讨论。防护林对柑桔园的防风作用及效应,上海市农科院等(1980)和上海市前卫农场曾进行过观测研究。不过,在丘陵地的柑桔园,防护林的气象效应及其对柑桔树生育、冻害及产量的影响问题,至今还未见到详细报道。本文根据1983—1984年冬季的小气候观测结果及1984年春季的调查资料,对上述问题作了初步探讨,以供参考。
I. Preface The orchard shelter forest is an integrated measure to improve the orchards ecological environment and prevent frost damage and drought. On the meteorological effects of farmland shelterbelt and its impact on the yield of crops, many scholars at home and abroad have carried out many reports. The characteristics of the microclimate in the protection zone have also been specially studied. Orchard protection forest cold frost, has aroused the discussion of the relevant units. The role of shelterbelt in citrus orchard protection and its effects have been observed and studied by Shanghai Academy of Agricultural Sciences (1980) and Shanghai avant-garde farm. However, the citrus orchards in the hilly areas, the meteorological effects of shelterbelts and their impact on citrus tree growth, frost damage and yield have not yet been reported in detail. Based on the microclimate observations in the winter of 1983-1984 and the survey data in the spring of 1984, this paper makes a preliminary study on the above issues for reference.