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本文中的山区、半山区主要是指黑龙江省农作物品种区划的第五积温带和第六积温带,这一地区的主要农业特点是气候冷凉,无霜期短,土地开发晚。主要种植的农作物以小麦、早熟大豆为主。近年来由于受天气和市场的影响,大豆面积不断扩大,造成大豆重迎茬严重,为了改变这一地区种植结构,采用扩大马铃薯种植面积方法十分
The mountainous and semi-mountainous areas in this paper mainly refer to the fifth cumulate zone and the sixth cumulus zone of crop varieties in Heilongjiang Province. The main agricultural features in this area are cold climate, short frost-free period and late development of land. The main crops are wheat and precocious soybeans. In recent years, due to the weather and the impact of the market, soybean area continues to expand, resulting in serious grazing of soybean, in order to change the planting structure in this region, the use of methods to expand the planting area of potato is very