论文部分内容阅读
以云烟99为材料,研究了蚯蚓粪施用量及其方式对烤烟土壤容重、土壤和烟叶钾营养以及农艺性状和经济性状的影响,目的在于寻求适合该地区土壤改良的有效途径,进一步提升烟叶产量和品质。结果表明,穴施和条施下,蚯蚓粪不同施用量均可降低土壤容重,不同程度提高了土壤速效钾含量、成熟期鲜烟叶和烘烤后烟叶钾含量,改善了农艺性状,增加了产量、产值以及中上等烟比例。以上效果以1 500 kg/hm2和穴施方式(X2)最佳。因此,蚯蚓粪不仅能够有效改善土壤结构以及钾营养,而且提高了烤烟产量和经济效益,为陕南烟区通过施用蚯蚓粪改良土壤提供了最佳用量和施用方式。
Taking Yunyan99 as material, the effects of application amount and mode of earthworm excrement on soil bulk density, potassium nutrition and agronomic traits and economic traits of tobacco and flue-cured tobacco were studied in order to find effective ways to improve the soil in this area and to further improve the yield of tobacco And quality. The results showed that different application rates of vermicompost and earthworm excrement could reduce the bulk density of soil, and increase the available potassium content, the fresh leaf and the potassium content of the leaves after the ripening, improve the agronomic traits and increase the yield , Output value and middle and upper class smoke ratio. The above effect is best at 1 500 kg / hm2 and hole application (X2). Therefore, vermicompost can not only effectively improve the soil structure and potassium nutrition, but also increase the yield and economic benefits of flue-cured tobacco, which provides the best dosage and application mode for improving soil by applying vermicompost in southern Shaanxi tobacco area.