干旱地区农业研究
榦旱地區農業研究
간한지구농업연구
AGRICULTURAL RESEARCH IN THE ARID AREAS
2014年
6期
236-243
,共8页
≥10℃积温%空间分布%年代际变化%玉米生产%河西走廊中部
≥10℃積溫%空間分佈%年代際變化%玉米生產%河西走廊中部
≥10℃적온%공간분포%년대제변화%옥미생산%하서주랑중부
cumulative temperature ≥10℃%spatial distribution%decadal variation%maize production%central Hexi Corridor
采用数理统计方法对河西走廊中部六县(区)1961—2009年逐日实测气温资料进行分析,分析≥10℃界限温度分布特征、年际和年代际演变规律及其异常变化特点,并分析≥10℃界限温度的演变对当地主导作物玉米的种植结构、生长性状及产量等的影响,结果表明:近50 a河西走廊中部≥1O℃界限温度表现为初日提早、终日推迟、持续日数延长、积温增加的趋势;20世纪70年代至80年代前期各地≥1O℃积温偏少,持续日数较短,90年代以来,积温增加趋势明显,尤其2001—2009年增加幅度为近50 a最大,热量资源充足;70年代、80~90年代初均出现积温异常偏少、持续日数异常偏短的年份,2000—2009年,河西走廊中部≥10℃积温异常偏多的年份占近50 a来异常偏多年份的83%;生长季≥10℃热量资源显著增加,利于扩大河西走廊中部主导作物玉米的种植面积和区域,提高了玉米单产及总产产量。
採用數理統計方法對河西走廊中部六縣(區)1961—2009年逐日實測氣溫資料進行分析,分析≥10℃界限溫度分佈特徵、年際和年代際縯變規律及其異常變化特點,併分析≥10℃界限溫度的縯變對噹地主導作物玉米的種植結構、生長性狀及產量等的影響,結果錶明:近50 a河西走廊中部≥1O℃界限溫度錶現為初日提早、終日推遲、持續日數延長、積溫增加的趨勢;20世紀70年代至80年代前期各地≥1O℃積溫偏少,持續日數較短,90年代以來,積溫增加趨勢明顯,尤其2001—2009年增加幅度為近50 a最大,熱量資源充足;70年代、80~90年代初均齣現積溫異常偏少、持續日數異常偏短的年份,2000—2009年,河西走廊中部≥10℃積溫異常偏多的年份佔近50 a來異常偏多年份的83%;生長季≥10℃熱量資源顯著增加,利于擴大河西走廊中部主導作物玉米的種植麵積和區域,提高瞭玉米單產及總產產量。
채용수리통계방법대하서주랑중부륙현(구)1961—2009년축일실측기온자료진행분석,분석≥10℃계한온도분포특정、년제화년대제연변규률급기이상변화특점,병분석≥10℃계한온도적연변대당지주도작물옥미적충식결구、생장성상급산량등적영향,결과표명:근50 a하서주랑중부≥1O℃계한온도표현위초일제조、종일추지、지속일수연장、적온증가적추세;20세기70년대지80년대전기각지≥1O℃적온편소,지속일수교단,90년대이래,적온증가추세명현,우기2001—2009년증가폭도위근50 a최대,열량자원충족;70년대、80~90년대초균출현적온이상편소、지속일수이상편단적년빈,2000—2009년,하서주랑중부≥10℃적온이상편다적년빈점근50 a래이상편다년빈적83%;생장계≥10℃열량자원현저증가,리우확대하서주랑중부주도작물옥미적충식면적화구역,제고료옥미단산급총산산량。
Based on the daily air temperature data of six counties of Zhangye in the central Hexi Corridor from 1961—2009 , analysis was made of the spatial distributions , annual and decadal variations and climatic anomalous change year of the critical temperature≥10℃ ,as well as the effect of its evolvement on crop planting pattern ,growth sit-uation and maize output .The results are as follows:During the last 50 years ,the variation trend of the critical tempera-ture ≥10℃ presents the characteristics of the initial day becoming earlier ,terminalday postponing ,duration prolonging and the accumulated temperature increasing .In the 1970s—1980s ,the phenomena of the accumulated temperature ≥10℃ decreasing and duration shortening occurred in most of the weather stations in the central Hexi Corridor;in the 1990s ,the accumulated temperature increased obviously ,and the increase extent in the years of 2001—2009 is the high-est the last 50 years;and the phase of thermal abundance appeared .In the beginning of 1970s—1990s ,the anomaly phenomena of the accumulated temperature≥10℃ decreasing and duration shortening occurred in most of the weather stations .During the period of 2000—2009 ,the anomalous increase years of critical temperature ≥10℃ accounted for 83% of the total in the last 50 years .The anomalous increase years ,accumulated temperature ≥10℃ and thermal re-sources increased remarkably in maize growing period ,which was helpful for enlarging planting area of the dominant crop maize ,raised the yield of maize per unit area and the general output .