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休甸县地处北纬47°12′东经124°48′,4—10月份平均气温13°—15℃,1977—1987年平均无霜期为132天。最短的1968年,初霜为9月10日,终霜为6月10日,无霜期仅91天。根据甜菜的生物学特点,一般要求180天生育期,才能获得理想的产量和含糖率,但从我县的气候条件看,即使在4月15日播种,至收获前,生长期近多不超150天。由于生长期缩短,积温、日照等均减少。这是林甸县几年来甜菜单产低、含糖率下降的主要原因之一。多年来,关于林旬县的甜菜播期,一直提倡一个“早”字,要求4月20日—25日播完。但广大农民在实践中有习惯认识,多数把播期拖到4月未,最晚拖到5月15日。因为我县历年的气候变
Xidian County is located at latitude 47 ° 12’N 124 ° 48’E and temperature from April to October is 13 ° -15 ° C. The average frost-free period from 1977 to 1987 was 132 days. The shortest in 1968, the first frost on September 10, the final frost on June 10, frost-free period of only 91 days. According to the biological characteristics of beets, the general requirements of 180 days of growth period, in order to obtain the desired yield and sugar content, but from the county’s climatic conditions, even if April 15, sowing, to harvest before the growing season almost Ultra 150 days. As the growth period shortened, accumulated temperature, sunshine and so reduce. This is one of the main reasons why LinDian County has suffered from low sugar beet production and declining sugar content in recent years. Over the years, on the sugar beet sowing in Linxun County, it has been advocating an “early” word, requiring broadcast from April 20 to April 25. However, the majority of peasants have a habit of understanding in practice, and most of them delayed the sowing of April not to April and late to May 15 at the latest. Because of the county’s climate change over the years