摘要
胡椒园间作槟榔是海南胡椒间作体系中应用较广的一种模式,为探明其间作优势来源,以海南胡椒优势种植区4个试验点的胡椒单作与胡椒/槟榔模式为研究对象,调查了2009~2011年各点胡椒产量与养分投入状况,测定2011年土壤养分与胡椒植株叶片养分含量,从而对比了间作模式与胡椒单作模式下胡椒产量、土壤养分状况、肥料产量贡献率和胡椒叶片养分含量的差异。结果表明：在各试验点不同产量水平下,同一地点间作模式的胡椒产量均极显著高于单作。间作模式土壤氮、磷、钾全量含量略低于单作,但未达到显著水平;间作模式土壤速效磷和速效钾含量高于单作,且速效磷差异达到显著水平。在养分投入相同的条件下,间作模式氮、磷、钾肥料偏生产力均极显著高于单作。间作模式下胡椒叶片磷、钾养分含量周年大于单作。上述结果表明胡椒/槟榔间作提高了土壤中速效养分的含量,促进了胡椒对磷、钾等养分的吸收,从而提高了其肥料利用效率,并最终提高胡椒产量。胡椒/槟榔的间作优势可能与二者地下部互作有关。
Arecanut interoropped in black pepper plantation is one of the most widely used intercropping systems of black pepper in Hainan and noted for its great intercropping advantages. To investigate the principle of the intercropping advantages, an investigation of intercropping on black pepper yield, nutrient status of soil and black pepper leaf, partial factor productivity from applied fertilizer was conducted in the sole black pepper cropping and black pepper-arecanut intercropping system in 4 sites in Hainan from 2009 to 2011. Nutrient status of soil and black pepper leaf were determined in 2011. The results showed that there were significant differences among the sites and the cultivation systems. In the circumstance of different black pepper yield among the sites, the yield of intercropping system was significantly higher than that of sole system. Contents of available P and K in intercropping soil were higher than that in sole. cropping soil and the content of available P reached significant level. Partial factor productivity from applied N, P, K fertilizer in intercropping systems were significantly larger than these in sole cropping system. P and K Contents in black pepper leaves of intercropping system were higher than that of sole cropping system. These results indicated that intercropping could enhance the bioavailability of soil nutrient and the nutrient absorption of black pepper, and then increased black pepper yield. We inferred it could rise from the benefit of root interaction in intercropping system and then have contribution to the intercropping advantages.
出处
《热带作物学报》
CSCD
北大核心
2015年第7期1191-1196,共6页
Chinese Journal of Tropical Crops
基金
海南省自然科学基金(No.313088)
海南省重点科技计划项目(No.ZDXM20130048)
关键词
胡椒
槟榔
间作
地下互作
间作优势
Black pepper
Arecanut
Intercropping
Underground interaction
Intercropping advantages
