紫色砂页岩应用在烟草漂浮育苗上的可行性研究初报

Application Feasibility of Purple Sandstone to Tobacco Seedling Float System

通过对云南石林分布的紫色砂页岩进行初步研究表明,该页岩呈弱酸性,自然含水量约3%,富含作物所需的多种营养成分和微量的有机质、腐植酸等功能性物质,且砷、汞等重金属元素不超标。通过其与膨胀珍珠岩和多种有机肥按照一定比例进行配比,不仅可以培育出满足优质烟叶生产的适龄壮苗,而且还大大降低了育苗成本,与当前商用红河基质相比,田间可降低成本168.30元/hm2。因此,紫色砂页岩是一种比较理想的基质原料,应用在烤烟漂浮育苗上是完全可行的。

The preliminary study on purple sandstone in Shilin, Yunnan Province showed that the purple sandstone had rich nutrients, trace amount of organic matters and humic acids, and its natural water content was 3%, pH was weak acidic, with no excessive arsenic（As）, hydrargyrum（Hg） and other heavy metal elements. Sound seedlings could be produced in the medium with different percentages of purple sandstone, expanded perlite and various organic fertilizers, and the cost of nursery was reduced. Compared with Honghe commercial medium, the application of new medium could reduce cost by 168.30 yuan/ha. Therefore, the purple sandstone is ideal medium material for tobacco seedling float system.