【摘要】 对石河子垦区农业自然条件和不同年份粮食、经济作物种植面积和产量的变化进行了详细分析,阐明了垦区利用早熟冬麦成熟收获后尚有的≥10℃的活动积温 2000～2 200℃,无霜期 95～100 d,≥15℃的持续日数80～85 d进行麦后复种特早熟玉米和套种早熟玉米的生产是可行的以及麦田复种玉米的意义。更多还原

【Abstract】 The agricultural nature conditions in Shihezi reclamation area and its change of planting area, and the yield of food crops and industorical crops in different years were analyzed. The result showed that it is advisable that there still were 2000-2200℃ which remainder effective temperature of ≥10℃ and there were frost free period of 90-100 days, and there were 80-85 days which persis-tend period of ≥15℃ after the early-maturing winter wheat had been harvested. It is possible that the special early-maturing maize is planted after early-maturing winter wheat was harvested, and early-maturing maize is interplanted with early-maturing winter. The significance of multiple cropping of maize in reclamation area was discussed too.更多还原