Study On The Fruit Plants’ First-flowering Date Response Of The Temperature In ChangBei Area, JiangXi Province

Natural phonology can not only reflect the current weather conditions,can also reflectthe influence of meteorological conditions over a period of time. The data throughlong-term natural phenology observation can used in the study of relationship betweennatural phenological change and meteorological conditions. Applied to climate changeresearch and guide the agricultural, forestry, animal husbandry, fishery and other aspects ofproduction.In order to ensure the agricultural production activities carried out smoothly, in a year,from sowing to harvest crops, all aspects of work must comply with the farming seasons.Phenological phenomena introduction visually display the farming season, accuratelyreflect changes in climatic conditions, guiding the broad masses of peasants reasonablearrangements for the layout of agricultural production.This paper based the meteorological data of2002–2013,which was collected byJiangxi Agricultural University weather station in Jiangxi province Changbei area. TakeCitrus reticulata Blanco., Prunus persica Batsch Var.vulgaris Diospyros kaki L., Myricarubra(Lour.)Sieb.et Zucc, Castanea mollissima BI., Zizyphus jujuba Mill. and Eriobotryajaponica (Thunb.) Lindl.these seven kinds of common fruit trees in ChangBei area as theresearch object. Selected winter (December last year to February of the year), spring(March to May), summer (June to July) as the observation period, because of different fruittree species’ blossom period differ greatly, further divided Spring into late winter andearly spring (February to March), early Spring (March to April) and late Spring (April toMay) three period of time. Through comprehensive analysis of the year2002to2013atdifferent periods of the temperature data and the first-flowering date of seven selected kindof fruit trees, exploring effects of the change of average temperature, average highesttemperature and average lowest temperature on the first-flowering date of fruit trees. Theresults are as follows:The average temperature in different periods effect on seven kinds of fruittrees’first-flowering date changes are as follows:(1) The average temperature in Winter time increases1℃,the first-flowering date ofcitrus advances2.9days,the first-flowering date of Diospyros kaki advances3.1days,thefirst-flowering date of Myrica rubra advances7.8days.(2) The average temperature in Late winter and early spring timeincreases1℃,thefirst-flowering date of Citrus advances2.4days,the first-flowering date of Prunus persicaadvances4.2days, the first-flowering date of Diospyros kaki advances2.2days,thefirst-flowering date of Myrica rubra advances5.5days.(3) The average temperature in whole spring time increases1℃,the first-flowering date of Citrus advances3.8days, the first-flowering date of Diospyros kaki advances4.6days.(4) The average temperature in early spring time increases1℃, the first-floweringdate of Diospyros kaki advances3.6days.(5) The average temperature in late spring time increases1℃, the first-floweringdate of Eriobotrya japonica defer2.4days.The average highest temperature in different periods effect on seven kinds of fruittrees’first-flowering date changes are as follows:(1) The average highest temperature in winter timeincreases every1℃, thefirst-flowering date of citrus advances1.8days, the first-flowering date of Prunus persicaadvances4.2days, the first-flowering date of Diospyros kaki advances1.8days, thefirst-flowering date of Myrica rubra advances4.7days.(2) The average highest temperature in Late winter and early spring time increases1℃,the first-flowering date of Citrus advances1.1days,the first-flowering date ofDiospyros kaki advances1.0days,the first-flowering date of Myrica rubra advances2.6days.(3) The average highest temperature in whole spring time increases1℃,thefirst-flowering date of Citrus advances2.6days, the first-flowering date of Diospyros kakiadvances3.3days.(4) The average highest temperature in early spring time increases1℃, thefirst-flowering date of Citrus advances2.4days,the first-flowering date of Diospyros kakiadvances2.5days.The average lowest temperature in different periods effect on seven kinds of fruittrees’first-flowering date changes are as follows:(1) The average lowest temperature in winter timeincreases every1℃, thefirst-flowering date of Myrica rubra advances8.7days.(2) The average lowest temperature in Late winter and early spring time increases1℃,the first-flowering date of Diospyros kaki advances1.8days,the first-flowering dateof Myrica rubra advances3.5days.(3) The average lowest temperature in whole spring time increases1℃,thefirst-flowering date of Prunus persica defer9.0days.(4) The average lowest temperature in late spring time increases1℃, thefirst-flowering date of Prunus persica defer6.3days, the first-flowering date of Myricarubra defer5.7days.