紫色砂頁巖應(yīng)用在煙草漂浮育苗上的可行性研究初報

Application Feasibility of Purple Sandstone to Tobacco Seedling Float System

摘要: 通過對云南石林分布的紫色砂頁巖進(jìn)行初步研究表明,，該頁巖呈弱酸性,，自然含水量約3%，富含作物所需的多種營養(yǎng)成分和微量的有機(jī)質(zhì),、腐植酸等功能性物質(zhì),，且砷、汞等重金屬元素不超標(biāo),。通過其與膨脹珍珠巖和多種有機(jī)肥按照一定比例進(jìn)行配比,，不僅可以培育出滿足優(yōu)質(zhì)煙葉生產(chǎn)的適齡壯苗，而且還大大降低了育苗成本,，與當(dāng)前商用紅河基質(zhì)相比,，田間可降低成本168.30 元/hm2。因此,，紫色砂頁巖是一種比較理想的基質(zhì)原料,，應(yīng)用在烤煙漂浮育苗上是完全可行的。

Abstract: 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.