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1967年,9月下旬平均气温13.4℃,粮食产量9亿千克。 1968年,9月下旬平均气温11.5℃,粮食产量下降到8亿千克。 1971年,9月下旬平均气温12.6℃,粮食产量10亿千克。 1972年,9月下旬平均气温9.8℃,粮食产量下降到8亿千克。 1975年,9月下旬平均气温15.6℃,粮食产量15亿千克。 1976年,9月下旬平均气温14.2℃,粮食产量下降到12.7亿千克。 20年来四平市的粮食产量,前后曾出现过3次较大的波动,粮食产量下降幅度最大的年份也是9月下
In 1967, the average temperature in late September was 13.4 ℃ and the grain output was 900 million kilograms. In 1968, the average temperature in late September was 11.5 ℃, and grain output dropped to 800 million kilograms. In 1971, the average temperature in late September was 12.6 ℃ and the grain output was 1 billion kilograms. In 1972, the average temperature in late September was 9.8 ℃, and grain output dropped to 800 million kilograms. In 1975, the average temperature in late September was 15.6 ℃, and grain output was 1.5 billion kilograms. In 1976, the average temperature in late September was 14.2 ℃, and the grain output dropped to 1.27 billion kilograms. Siping City in 20 years of food production, before and after there have been three major fluctuations, the largest decline in food production is also the year of September