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北兴农场位于黑龙江省第三、四积温带跨越区。历年≥10℃活动积温为2360℃．无霜期为116天．属山间冷凉地区。几年来采用优良品种．适期早播．坚持深松耕法．在整地上狠下功夫并采用合理轮作制．及时防除大豆病虫害．采用叶面施肥等促早熟措施。从1994年～1997年连续4年大豆亩
Beixing Farm is located in Heilongjiang Province, the third and fourth plot temperate spanning area. Over the years ≥ 10 ℃ active accumulated temperature of 2360 ℃. Frost-free period of 116 days. Is a cold mountain area. In recent years the use of fine varieties. Early sowing on schedule. Insist on deep plowing. Make great efforts on site preparation and adopt reasonable rotation system. Promptly control soybean pests and diseases. Use of foliar fertilization and other precocious measures. From 1994 to 1997 four consecutive years of soybean acre