《旧唐书·本纪·卷十四》
加上整个夏天干旱炎热，立秋之后大雨不停，田地来不及耕耘播种，秋季没有丰收的希望。
重以经夏炎又，自秋霖泽，南亩亏播植之功，西成失丰登之望。
In addition, there was drought and heat throughout the summer, and after the beginning of autumn there was incessant heavy rain. The fields did not have time to be cultivated and sown, and there was no hope for a good harvest in autumn.