【摘要】 运用农业系统工程的观点,采用指数模型方法,本文对广汉县1978—1983年的种植业和农业生产发展动态进行了系统分析和系统综合。结果是:促使广汉县种植业产值指数持续增长的主导因素是农作物,特别是粮食作物单位面积产量的迅速提高。油菜生产是广汉县的一大优势,种植业产值增长似与油菜面积的扩大有相关性。适当地扩大油菜面积和调减小麦面积是协调粮经作物关系的可行途径。农业结构的调整可以从种植业上见效。实行集约化种植,提高土地的生产率和利用率,提高各种作物单产,挤出部分耕地发展多种经营是可能的。更多还原

【Abstract】 With index modle and from point of view of agrosystem engineering, the system analysis and system synthesis on the developmental dynamic state of 1978-1983’s crop-culture and agroproduction of Guanghan county were made in this paper.The results are:The principal factor keeping up a steady increase in the index of crop-culture output value is crop,especially the rapid increase of unit area yield of cereals. Rape production is a superiority of Guanghan. There is a correlation between the increase of crop-cultural output value and the expanse of rape cultivated area. The appropriate increasing of rape area and the decreasing of wheat area is a suitable way for readjustment of relationship between food crop and economic crop. Therefore, the readjustment of agricultural structure can take effect with crop-culture. Carrying on intensive crop-culture, increasing productivity and utilization ratio of land, squeezing some field land out for developing various cultures will be possible.更多还原