论文部分内容阅读
我省陇南山多川少,山地施肥困难,土壤贫瘠。据测定,山地0—20厘米耕层土壤有机质含量一般仅为0.69—0.83％;土壤结构极差,理化性状不良,耕层养分日趋下降,粮食产量低而不稳。针对这些问题,我们在成县进行了绿肥作物栽培利用的一些探索性试验。该试验在城关、支旗、抛沙三个公社各设一个点,连续进行了两年。供试种类有:箭舌豌豆、毛苕子、柽麻、田菁、草木樨、山厘豆和紫云英等。试验方式有:冬小麦返青套播,麦后复种,玉米地套种,水稻后期套种和箭舌豌豆、毛苕子、柽麻、田菁的留种等项试验。本文仅就试验中表现最好的333/A 箭舌豌豆(以下简称333/A)在当地的栽培利用简述于后。
Longnan Mountains in our province less Sichuan, fertilization difficult mountain, barren soil. According to the determination, the soil organic matter content of 0-20 cm layer in mountainous area is generally only 0.69-0.83%. The soil structure is very poor, the physical and chemical properties are poor, the nutrients in the layer soil are decreasing, and the grain yield is low and unstable. In response to these problems, we conducted some exploratory experiments on the cultivation and utilization of green manures in Chengxian County. The trial in the city, flag, throwing sand three communes each set a point for two consecutive years. Species to be tested are: tongue tongue peas, hair prickly heat, velvetleaf, Sesbania, marshmallow, mountain beans and milk vetiver and so on. Test methods are: winter wheat green set sowing, wheat multiple cropping, maize interplanting, late rice intercropping and tongue tongue peas, hair prickly heat, velvetleaf, Tian Jing stay seed and other tests. This article only on the best performance test 333 / A arrow tongue pea (hereinafter referred to as 333 / A) in the local cultivation and utilization outlined below.