关键词: 秋收作物, 生长季, 气象条件, 评价

Abstract: According to the observed meteorological data and the historical data from 2346 meteorological stations in major agriculture area in China in 2021, the climate suitable index and agrometeorological disaster index were used to analyze the agrometeorological conditions in the growing season of major autumn harvest crops, such as corn, single rice, later rice, soybean and cotton. The results showed that: accumulated temperature greater than or equal to 10 degrees centigrade was 100 to 250℃·d more than normal value and the thermal conditions were sufficient. The precipitation and soil conditions were suitable for crop growth and development. Temperature, sunshine and water conditions matched well in summer which were favorable to flowering and filling stage of corn, single rice and soybean. Also, the meteorological conditions were favorable to flowering and boll setting of cotton. In general, the impact of drought during the main growth period of autumn harvest crops was light, and the meteorological conditions were favorable for crop growth, development and yield. While rainstorm and flood disasters occurred frequently especially in Henan province which caused the crops heavy losses and some crops were out of harvest. There was a continuous extreme rainy and sunless weather during maturity period for corn and cotton in eastern part of Northwest China, North China and the north of Huanghuai region. It was not conducive to crop filling maturation and harvesting. Additionally, staged low temperature in Northeast China, drought in northeastern part of Northwest China, high temperature in southern China and Xinjiang had a certain adverse effect on local crops.

Key words: Autumn harvest crops, Growing Season, Agrometeorological conditions, Assessment