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前言我国北方广大麦区在籽粒灌浆时期常遭干热风的危害,这种灾害性气候是由不同强度的高温,干旱和热风组成的.由于干热风系多种气象因子综合产生的危害,其影响比任何单一因素的危害要大得多.兰州大学王邦锡等试验研究指出:小麦叶绿素含量在干热风下受到破坏,下降19—29%,用~(14)CO_2测定同化速率表明干热风处理条件下,~(14)CO_2进入叶片数量下降了44.5%;在干热风影响下,根系~(32)P吸收数量减少.
Introduction The broad wheat region in north China is often endangered by dry and hot wind during grain filling period, which is composed of high temperature, drought and hot wind with different intensities. Due to the harm caused by the combination of multiple meteorological factors in the dry and hot wind system, More harmful than any single factor.Lingzhou University, Wang Bangxi and other experimental studies have shown that: wheat chlorophyll content was destroyed under dry and hot air, a decrease of 19-29%, with ~ (14) CO 2 assimilation rate measured under dry and hot air treatment conditions The number of ~ (14) CO_2 entering leaves decreased by 44.5%. Under the influence of dry-hot wind, the amount of ~ (32) P absorption decreased.