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本文以柑桔、梨、苹果为试材,经过3—6年的观测。研究了这3个树种共10个品种(品系)在武汉地区的生物学零度和花期有效积温;用积温法和相关分析法对梨树3个品种进行了花期预报,并以柑桔为试材,进一步对积温法进行了验证。结果表明:武汉地区柑桔的生物学零度为9.6—10.6℃,梨为5.9—6.5℃,苹果为6.3—8.2℃,10个果树品种(品系)的花期有效积温均较为稳定,可以根据花期有效积温和气象温度预报值(或往年平均值)预报开花期;黄花等3个梨树品种花期早晚与2月上旬以来的旬平均最高温度积算值相关性极显著,并分别计算出它们的回归方程,用于果树花期预报;用积温法与相关分析法预报果树花期准确度相近。
In this paper, citrus, pear, apple as the test material, after 3-6 years of observation. The biological zero and flowering effective accumulated temperature of 10 varieties (strains) of these three tree species in Wuhan were studied. The flowering and flowering methods were used to predict the flowering temperature of three varieties of pear tree, , Further verification of the accumulated temperature method. The results showed that the biological zero degrees of citrus in Wuhan were 9.6-10.6 ℃, the pear was 5.9-6.5 ℃ and the apple was 6.3-8.2 ℃. The effective accumulated temperature of florescence of 10 fruit trees (lines) was stable, The forecast value of the accumulated temperature and meteorological temperature (or the average value in previous years) predicted the flowering stage. The correlation between the maximum and average daily temperature of the three pear cultivars such as Huanghua was significantly higher than that of the early ten days in early February, and their returns were calculated The equation is used to forecast the flowering period of fruit trees. The accuracy of forecasting the flowering period of fruit trees is similar with the accumulated temperature method and the correlation analysis method.