廣西百色植煙土壤主要養(yǎng)分特征及施肥策略
Major Nutrient Characteristics and Fertilization Strategy of Tobacco-planting Soils in Baise of Guangxi
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摘要: 2005、2006年采集了百色市8個(gè)產(chǎn)煙縣有代表性的植煙土壤樣品236個(gè),，并進(jìn)行了土壤養(yǎng)分含量分析,。結(jié)果表明，百色市土壤pH處于適宜范圍,，土壤有機(jī)質(zhì)較為豐富,，土壤速效氮、速效磷含量較高,，土壤速效鉀相對(duì)缺乏,，土壤交換性鈣、有效硫含量豐富,，土壤交換性鎂含量偏低,。因此，在生產(chǎn)過(guò)程中,，要遵循控氮,、適磷、提鉀原則,，施用生物鉀肥,，提高土壤有效鉀含量；注意增施鎂肥,，提高土壤交換性鎂含量,。Abstract: A total of 236 tobacco-planting soil samples were collected from 8 tobacco-planting regions in 2005 and 2006. Soil nutrient contents were determined for these samples. The results showed that the pH values of Baise soils was appropriate to tobacco growth, soil organic matter content was high, the soil available N and P were slightly high, but available K was insufficient. Soil exchangeable Ca and available S were sufficient, but Mg is slightly low. Therefore, it is necessary to control N and P fertilizer, apply K fertilizer and Mg to improve tobacco growth
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