ZU10 1591 FFP and crop yields.The regression coefficient between gain yield and FFP is 5.33,representing that gain yield in・ creases bV 79.5 kg/hm0 when FFP ex— tends by one day.Of the 3 major crops,rice yield is the most sensitive to FFP,which increases bV 90 kg/hm with FFP extends by one day.Wheat and maize yields increase by 79.5 冻日的变化与区域增暖相互关系)fJ】. ACTA GEOGRAPHIC SINICA(地理学 ment Report of the Intergovernmental 报),2003,58(Supplemenf):31~37. PaneI on Climate Change【Stocker,T. 【1 2】Chinese Meteorological Administration F.,D.Qin,G.一K.Plattner,M.Tignor,S. (中国气象局).The ground meteoro. K.Allen,J.Boschung,A.Nauels,Y.Xi. 1ogical observation norm f中国地面观 a,V.Bex and P.M.Midgley(eds.)】【M】. 测规范)[M】.Beijing:China Meteoro— Cambridge UniVersity Press。Cam. logical Press(北京:中国气象出版社), Working Group I to the Fifth Assess. bridge,United Kingdom and New York, 2003:21. Physical Science Basis.Contribution of kg/hm and 70.5 kg/hm ,respectively, [131 LI FY(李风云),WANG YS(王玉山), 【2】ECSCNARCC(EditoriaI Committee for WANG RB(E荣波).The characteristic NY.USA. when FFP extends by a single day. Conclusions In this paper,the research defined frost dates by using daily minjmum ground temperature。And then the re. search analyzed the temporaI and spatial characteristics of first frost date.Iast frost date and frost-free peri- od during the past 53 years。The re- search also investigated the influence of the extending FFP on major crop yields.The main conclusions are sum— marized as foUows: During the past 53 years,FFD showed a significantly delaying trend, and LFD showed an advancing trend. FFP Jengthed due to the Jater FFD and earlier LFD.The trend coefficients of FFD。LFD and FFP are 0.21 7.0.244 and 0.445 d/y,respectively. There existed some minOr difer- ences in the trend of FFD.LFD and FFP on decadaI time scales.FFD ob- viously delayed since the 21 century, while LFD was obviously ahead of time since 1 980s.FFP has almost no obvious trend in the 1 960s and 1 970s. It began to extend since 1 980s.espe- ciallyafter2010. The trend of FFD,LFD and FFP at alI stations is consistent.but the magnitude varies in diferent stations. The most obvious trend of FFD is in eastern region.And the most obvious trend of LFD and FFP Occurs in south central region.However.in eastem re- gion,the trend of FFD,LFD and FFP is not so obvious. The major crop yields show a sig- nificant correlation.ranging frOm 0.53 tO O.61 with frost-free period.The yields of grain,wheat,rice,and maize increase by 79.5,79。5,9O,and 70.5 kg/hm when FFP extends by one day. References 【1】IPCC,201 3:Summary for Policymak- ers.In:Climate Change 201 3:The Second China’S NationaI Assessment of frost occurrence and its recording Report on Climate Change)(《第二次气 method(霜的出现特点与录记方法)『J1. 候变化国家评估报告》编写委员会). JournaI of Guizhou Meteorology(贵州 Second China’s National Assessment 气象),201 3,37(3):63—64. Report 0n Cliarate Change(第二次气候 【14]MA SQ(马树庆),LI F(李锋),WANG Q 变化国家评估报告)【M】.Beijing:Sci. (王琪),etal Cold wave and frost(寒潮 ence Press(北京:科学出版社),2011: 和霜冻)【M】.Beijing:China Meteoro- 38-40. logical Press(北京:中国气象出版社), f31 SAMUEL HITZ,JOEL SMITH.Estimat— 2009:67-68. jng globalimpacts fr0m climate change [15】LI×(李想),CHEN U(陈丽娟),ZHANG 『J】. GIobaI EnvironmentaI Change, PQ(张培群).Characteristics of inter- 2004,14(3):201-218. decadal variations in first-frost date in 『41 LIU QY.ZHENG JY,GE QS.Effects of Northern China during 1 954-2005 globaI climate change on China’s agri— (1954-2005年长江以北地区初霜期变 culture[J].Chinese Agricultural Science 化趋势)fJ1.ADVANCES IN CLIMATE Bulletin,2008,24(12):447—453. CHANGE RESEARCH(气候变化研究 f51 TAO F LI ZHANG Z,ZHANG S,ef a 进展),2oo8,4(I):21-25. Response of crop yields to climate 【16]CHEN QJ(陈乾金),XIA HX(夏洪星), trends since 1 980 in China『J1.CLI— ZHANG YS(张永山).Analyses of un— MATE RESEARCH,2012,54(3):233— usual first and last frost during the last 247. 40 years in the ChangJiang and Huaihe 【6】U MS(李茂松),LI ZC(李章成),WANG valley(我国江淮流域近4O年异常初终 DL(王道龙),etal Impacts of naturaJ 霜冻的分析)『J】.Quarterly JournaI of disasters change on grain yield in China Applied Meteorology(应用气象学报), inthe past50years(50年来我国自然灾 1 995,6(1):50—55. 害变化对粮食产量的影响)[J】.J0UR- [1 71 HE WX(何维勋),FENG YX(冯玉香)。 NAL OF NATURAL DISASTERS(自然 CAO YH(曹永华),et al Changes of 灾害学报1,2005,14(2):55—6O. first and Iast frost date In Beijing during 【7】HE FF(贺芳芳),Gu XD(顾旭东),XU JL the Iast 50 years(dE京近50年初?终霜 (徐家良).Studies 0n heat resources 冻日的变化)fJ1.Chinese JoumaI of A change in Shanghai since 1 99O’s(20世 grometeorology(中国农业气象),1992, 纪90年代以来上海地区光能资源变化 1 3(4):33-36. 研究)『J].JOURNAL OF NATURAL RE— 【1 8】PAN SK(潘淑坤),ZHANG MJ(张明军), SOURCES(自然资源学报),2005,20 WANG BL(汪宝龙), aL Changes of f6):806—81 3. the first frost dates,fast frost dates, 【8】XU Y(许艳),vvlANG GF(王国复),wANG and duration of frost-free season in PX f王盘兴).Climatic change of frost in Xinjiang during the period of 1 960— China in recent 50 a f近50 a中国霜期 2011f1960-2011年新疆初终霜日及无 的变化特征分析)『J】.SCIENTIA METE- 霜期的变化特征)[J】.Arid Zone Re. OROLOGICA SINICA(气象科学),2009, search(干旱区研究).2O13,3O(4):735— 29(41:427-433. 742. 【91 YE DX(叶殿秀),ZHANG Y(张勇).Char- 【19】FENG PZ(冯佩芝),U CJ(李翠金),LI acteristic of frost changes frOm 1 961 to XQ(李小泉),ef AnaIvsis 0f Chinese 2007 over China f1961—2007年我国霜 ma|n meteoroIogicaI d;sasters(中国主 冻变化特征)【J】.JOURNAL OF AP— 要气象灾害分析)【M】.BeⅡing:China PLIED METEoRoLOGICAL SCIENCE Meteor0IogicaI Press(北京:气象出版 (应用气象学报),2008,19(6):661—665. 社1。1985:58—59. I1 0】WANG GF(王国复),XU Y(许艳),ZHU 【2o】HAN RQ(韩荣青),Ll WJ(李维京),Al YJ(朱燕君1,ef aL The spatiaI and tem- W×(艾婉秀),ef The climatic van— poraI characteristics and trend of frost ab川tv and influence Of firs1 fr0st da1es days over China for the past 50 years in N0rthem China f中国北方初霜冻日 f近5O年我国霜期的时空分布及变化 期变化及其对农业的影响)[J】.ACTA 趋势分析)[J】.METEOROLOGICAL GEOGRAPHICA SINICA(地理学报). MONTHLY(气象),2009,35(7):61—67. 201 O,65(5):525—532. f111MAZG(马柱国).Va riation offrostdays f21】ZHANG X(张霞),QIAN JX(钱锦霞). and its relationship to regional warm- Fr0st characterisUcs and its e仃ect On ing in Northern China(中国北方地区霜 (Continued 0n page 1 692) 1石92 2015 the characters of wheat maize and S. and rain on the natural population dy— 抗蚜性的初步研究)[J].Crop Re. avenae(冬小麦形态特征与抗麦长管蚜 namics of M avenae(模拟风雨对麦长 sources(作物品种资源),1989,(3o): 的关系研究)[J】.Plant Phytophylacica 管蚜自然种群发展的干扰作用)『J1. 3O一31. Sinica(植物保护学报),1991,18(10): Chinese Bulletin of Entomology(应用 [27】GAO CS(高崇省).1dentification of 5-10. 昆虫学报1,2009,29(8):4317-4324. wheat aphid resistance in the field(小 【1 4】ZHOU HB,CHEN JL,CHENG DF,et [21】Ministry of Agriculture of the People s 麦品种抗蚜性田间鉴别)『J1.Science a1.Evaluation on the resistance to Republic of China(中华人民共和国农 and Technology of Tianjin Agriculture aphids of wheat germplasm resources 业部).N 1443.7-2007 Rules for and Forestry( ̄津农林科技),1995,(2): in China.African JournaI of Biotech. Resistance Evaluation of Wheat to 8-9. nology,201 1,1 0(63):1 3930—1 3935. Diseases and lnsect Pests Part 7: 【28】LI SJ(李素娟),ZHANG ZY(张志勇), [15】GUO X(郭萧),LI KB(李克斌),YI J(尹 Rule for Resistance Evaluation of WANG XY(王兴运),et aL The fuzzy 姣),et a1.Effect of wheat cultivars on Wheat to Aphids fNY丌1 443.7—2007 recognition technique of aphid resis・ population parameters of M avenae 小麦抗病虫性评价技术规范一第7部 tance of wheat cultivars(1ines)(用模糊 (F.)(不同小麦品种(系)对麦长管蚜生命 分:小麦抗蚜虫评价技术规范)[S】. 识别技术鉴定小麦品种(系)抗蚜性研 参数的影响)[J].Scientia Agdcultura Beijing:China Agriculture Press(北京: 究)【J】.Plant Protection(植物保护), Sinica(中国农业科学),2010,43(10): 中国农业出版社)。2007. 1998,24(5):15-16. 2056-2063. 【221 PAINTER RH.Resistance of plants to 【29】ZHAO JJ(赵玖华),SAHNG YF(尚佑 [16】HU XH(胡想顺),ZHAO HY(赵惠燕), insects[J].Annua J Review of Entomol— 芬),WANG SJ(王升吉),et aL Identifi- HU ZQ(胡祖庆),era^EPG compara- ogy.1 958.3:267-290. cation of muIt..resistance of 1 52 wheat tive of feeding behaviors of S.avanae [23】DUAN CX(段灿星),WANG XM(王晓 cultivars(strains)in Huang Huai region on three wheat cultivars(麦长管蚜在3 鸣),ZHU ZD(朱振东).Screening and (152个黄淮地区小麦主要品种(系)的 个小麦品种上取食行为的EPG比较) evaluation of wheat germplasm for re- 多抗性鉴定)【J1_JournaI of Triticeae 『J1.Scientia Agricultura Sinica(中国农 sistance to the aphid(S avenae)(4,麦 Crops(麦类作物学报),2007,27(6): 业科学),2008,41(70):1 989—1 994. 种质对麦长管蚜的抗性鉴定与评价) 1123-1127. 【171 SHI ZL(史忠良),ZHENG WY(郑王义). fJ1.JournaI of Plant Genetic Re- 【30】QIU SY(仇松英),ZHANG SN(张松令), A study on field selecting technique of sources(植物遗传资源学报),2006,7 SHl ZL(史忠良),etaL Genetic diversi- wheat(冬小麦抗蚜品种田间筛选技术 (3):297-300. ty analysis of aphid resistant wheat 研究cultivars for resistance to wheat [24】LI XQ(李贤庆),GUO XR(郭线茹),LI cultivars by simple sequence reeated aphid(冬小麦抗蚜品种田间筛选技术研 KB(李克斌),etaL Resistance of wheat (SSR)markers(小麦抗蚜品种的遗传 究)【J】.Acta Agriculturae Boreali—Sini— cultivars(1ines)to S.miscanthi(Taka- 多样性SSR标记分析)[J】.Chinese ca(华北农学报),1999,14(1):98—101. hashi)(Aphidoidea:Aaphididae)(不同 Countryside Well-Off Technology(农学 『1 81 HAVLI C KOVA H Unvernalized seed— 小麦品种《系)对麦长管蚜的抗性)[J]. 学报),2011,(4):5-10. lings in screening of cereaI aphid pref- Acta Entomologica Sinica(昆虫学报), [31】CAI FH(蔡凤环),ZHAO HY(赵惠燕). erences for winter wheat cultivars『J1. 2006,49(6):963-968. Genetic polymorphism in naturaI pop— JournaI of Applied Entomology.1 988, [25】QU HX(屈会选),DANG JY(党建友), ulationsofM.avnae(麦长管蚜自然群 1 06:432-436. CHEN MF(程麦风),et aL Resistance 体的遗传变异研究)[J].Journal of [19】HU xs(胡想顺),LIU×(刘小凤),HU Z(胡 identification of wheat germplasm re— Northwest Sci.Tech University of Agri- 祖庆1,ef Resistance of ten wheat sources to M avenae(/b麦种质资源对 culture and Forestyr(Natural Science cultivars to S.avenae at wheat 麦长管蚜抗性的鉴定)fJ】.Acta Agri— Edition)(西北农林科技大学学报:自然 seedling stage(1O个小麦品种(材料) culturae Boreali-Sinica(华北农学报), 科学版),2004,32(2):21—24. 对麦长管蚜的室内苗期抗蚜性)[J]. 2004,1 9(40):1 02-1 04. f32】XU ZH,CHEN JL,CHENG DF。ef a^ Plant Protection(植物保护),201 1,37 【26]ZHENGWY(郑王义),XIE RC 瑞材), Discovery of English grain aphid (51:81-85. WANG DS(王东升),et aL Primary (Hemiptera:Aphididae)biotypes jn [20】WANG B(王冰),LI KB(李克斌),Yl J(尹 study on the aphid resistance of new China『J】.JournaI of Economic Ento— 姣),et a1.Elfects of simutated wind wheat cultivars(1ines1(冬麦新品种(系) mology,201 1,1 04(3):1 080-1 086. Responsible editor:Qingqing YIN Responsible proofreader:Xiaoyan WU (Continued frOm page 1 591) 绿洲气象).2013,7(2):47—5O. major crops(青海省近45年霜冻变化 agriculture in Taiyuan under climate [23】WANG RM(王荣梅),ZHANG XQ(张晓 特征及其对主要作物的影响)【J】.Mete. warming(气候变暖背景下太原市霜冻 琴),LIU J(刘姣),ef aL Frost variation orological Science And Technology(气 发生特征及其对农业的影响)[J].Chi— and its influence on agriculturaI in 象科技).2009,37(1):35—41. nese JournaI of Agrometeorology(中国 Kashi of Xinjiang in recent 50 years(新 [25】LI MS(李茂松),WANG DL(王道龙), 农业气象).2010,31(1):111—114. 疆喀什地区近5O a来霜冻变化特征及 ZHONG XL(钟秀丽),eta1.Current sit. 【22】HUANG JJ(黄玖君),SHl GQ(师国强), 其对农业的影响)【J1.JournaI of Arid uation and prospect of research on DENG XX(邓小霞).Characteristics of Meteorology(干旱气象).2013,31(2): frost ofwinterwheat(冬小麦霜冻害研 frost change and its influence on main 309-31 2. 究现状与展望)【J】.JournaI Of Natural crops in Qiemo Oasis During 1 961— [24]CHEN F(陈芳),WANG QC(汪青春), Disasters(自然灾害学报),2005,14(4): 2010(且末绿洲1961—2010年霜冻的 YIN WX(殷万秀).Characteristics of 72—78. 变化特征及其对主要农作物的影响)【J】. frost variations in recent 45 years over Desert and Oasis Meteorology(沙漠与 Qinghai province and its impact on Responsible deitor:Xiaoxue WANG Responsible proofreader:Xiaoyan WU