摘要
本文采用农作物生长发育和产量形成对气温、降水等环境条件的反应函数．建立了粮食产量变率计算模式，分析了在作物各生长季内气温升、降１—２℃与降水增、减１０％－２０％的不同组合条件下，吉林省各地主要粮豆作物产量的变单，提出了气侯变化的农业对策。结果表明，气候变化对吉林省各地粮豆产量影响较大，地域间有较大差异。气温升、降１℃，粮豆单产将升、降４％－３％，东部山区变幅最大；降水增加１０％，西部粮豆产量将增加１０％左右，东南部将减产８％左右。各地应采取不同的农业生产对策，以适应未来气侯变化．
Using the response functions of the growth and yield of crops to such envirmental factors as temperature and precipitation, the calculating model of thevariability of crops yield is founded. The variability of the yield of major grainand legumes in various parts of Jinn Province is analysed in association with variable combining conditions (temperature change 1-2℃ and precipitation change10%-20%). The agricultural countermeasures to the climatic change are also putforward. The results show that the impact of climatic change on the yield of grain and legumes in various parts of Jinn Province is relative great and areal difference is evident. With 1℃ fluctuation of temperature, there will be 4%-30%variation of per unit yield of grain and legumes, and the broadest range of variation is in the eastern mountainous area; in western area, the yield of crops willincrease by about 104O with an increase of precipitation of 10%, whereas the yield of crops will drop by about 8% in the southeastern part. Different agriculturalcountermeasures should be taken in various parts to adapt the climatic change inthe future.
出处
《自然资源》
CSCD
北大核心
1994年第1期34-40,共7页
关键词
气候变化
吉林
粮食
产量
Climatic change
Grain yield
Jinn Province
