“松土”育苗基质理化特性及其烤烟育苗效果评价  

Evaluation on Physical and Chemical Properties of“Loose Soil”Seedling Substrate and Seedling Effect for Flue-cured Tobacco

作　　者：杨宗云 徐兴阳[2] 杨正权[1] 洪波 张连华 张云 张济益 YANG Zongyun;XU Xingyang;YANG Zhengquan;HONG Bo;ZHANG Lianhua;ZHANG Yun;ZHANG Jiyi(Xundian Subsidiary Company of Yunnan Tobacco Company Kunming Branch,Xundian,Yunnan,China 655200;Technical Center,Yunnan Tobacco Company Kunming Branch,Kunming,Yunnan,China 650051;Yiliang Subsidiary Company of Yunnan Tobacco Company Kunming Branch,Yiliang,Yunnan,China 652100)

机构地区：[1]云南省烟草公司昆明市公司寻甸分公司,云南寻甸655200 [2]云南省烟草公司昆明市公司技术中心,云南昆明650051 [3]云南省烟草公司昆明市公司宜良分公司,云南宜良652100

出　　处：《昆明学院学报》2021年第3期1-4,共4页Journal of Kunming University

基　　金：中国烟草总公司云南省公司重点项目(2020530000241020).

摘　　要：为给烤烟培育壮苗提供优质、安全的育苗基质选择依据.引进当前常用的3种烤烟育苗基质,参照《烟草漂浮育苗基质标准》检测其理化特性,并在同一生态条件下开展小区育苗效果比较试验,随机区组排列,3次重复.结果表明,1)“松土”育苗基质的各项理化指标较好,所培育烟苗根系发达、茎秆较整齐,仅电导率明显超标,在一定程度上抑制种子萌发.2)育苗基质A表现为强酸性,且电导率、有效铁离子和砷含量超标,水体及基质表面滋生绿藻明显,育苗效果最差;而育苗基质B表现为出苗期小苗的旋根率突出,育苗效果中等.综上所述,“松土”育苗基质安全性高,育苗效果好,适合在烤烟育苗上应用,但要高度重视其电导率对种子萌发的不利影响.In order to provide high quality and safe nursery substrate of floating seedling for flue-cured tobacco,three kinds of nursery substrates were introduced for flue-cured tobacco to test their physical and chemical properties according to The Standard of Floating Nursery Substrate.A comparative experiment with random grouped plots was repeated 3 times to compare the effect of seedlings growing in the same ecological conditions.The test results showed that 1)“Loose Soil”seedling substrate was the best among the three nursery substrates in the physical and chemical indexes with the well developed tobacco seedling and neat stalks,but the electrical conductivity was obviously beyond the standard,which inhibited the seed germination to some extent.2)The substrate A showed strong acidity,and the content of electrical conductivity,available iron and arsenic exceeded the standard.Green algae grew obviously on the surface of water.The substrate and seedling quality were the worst.However,in the substrate B the rotation rate of seedlings was prominent at the emerging stage and seedling quality was medium.Above all,“Loose Soil”seedling substrate has high safety and good seedling effect,and is suitable to develop strong seedling in flue-cured tobacco.However,it should be highly concerned of the electrical conductivity for the adverse effect on seed germination.

关 键 词：烤烟 育苗基质 理化特性 育苗效果 

分 类 号：S572[农业科学—烟草工业]