论文部分内容阅读
2012年陕西省石泉县水稻种植面积4.59万亩,是全县种植面积最大,产量最高的粮食作物之一。石泉县耕作制度在1990~2012年间没有大的变化,2012年复种指数165.7%,主要的耕作制度是“水稻—油菜”或“玉米一年两熟”和“马铃薯—玉米间作套种一年两熟制”两种形式。川道低山以第一种熟制为主,中高山以第二种熟制为主。中高山部分水田仍是水稻一年一熟制。由于小麦退出主产作物,水稻—小麦、
In 2012, the area under rice cultivation in Shiquan County, Shaanxi Province, was 45,900 mu, making it one of the largest cereal crops with the highest yield in the entire county. The farming system in Shiquan County showed no major changes from 1990 to 2012, and the multiple cropping index in 2012 was 165.7%. The main farming systems were intercropping of “rice-rape” or “double-crop of corn” and “potato-corn” Intercropping two systems a year "two forms. Chuan Road low mountain to the first cooked, high mountain in the second cooked mainly. Some paddy fields in the middle and high mountains are still rice crops a year. As wheat leaves the main crop, rice-wheat,