烤煙間作草木樨對土壤養(yǎng)分的影響

Effects of Flue-cured Tobacco Intercropping with Sweet Clover on Soil Nutrient Contents

摘要: 利用生物多樣性作用機(jī)理進(jìn)行不同作物間作套種是目前養(yǎng)分利用,、生物抗病、化感作用和信息交換的研究熱點(diǎn),。采用盆栽和田間小區(qū)試驗(yàn)方法,，研究了烤煙間作草木樨對土壤養(yǎng)分的影響，結(jié)果表明,，烤煙間作草木樨后對植煙土壤堿解氮和土壤速效磷含量的影響間作處理與單作處理比較沒有顯著差異，而在烤煙成熟中后期間作體系能不同程度地增加植煙土壤的速效鉀含量,，對平衡和協(xié)調(diào)土壤養(yǎng)分有積極的作用,。

Abstract: The crop intercropping basing on biodiversity effect mechanism is a hotspot of nutrient utilization, disease resistant,allelopathy and information exchange. In this paper, field experiment and pot culture were conducted to study the effects of flue-cured tobacco and sweet clover (Melilotus officinalis lam.) intercropping on soil nutrient contents. The results showed that no significant difference of the contents of available nitrogen and available P was found between the treatment of intercropping and single cropping, but in the middle or late stage of flue-cured tobacco growth, the content of available K increased in the intercropping treatment, which might contribute to the balance of soil nutrients.