两种间种对油茶林地土壤养分含量的影响

为研究油茶Camellia oleifera幼林间种豆科植物对土壤养分含量的影响，在油茶林地分别间种大豆Glycine max和花生Arachis hypogaea两种作物，连续测定花生和大豆生长到收获期间每个月土壤全氮、全钾、全磷、碱解氮、有效磷、速效钾含量变化情况。结果表明，间种2种作物均能改善林地土壤，与对照组相比，间种组土壤全磷、全钾、碱解氮、速效钾含量均有显著提高，但有机质与有机磷含量无明显变化；2种豆科植物均可作为油茶间种作物。间种大豆组土壤各养分含量均高于花生组，表明大豆更适合用于油茶林间种。

The Effects of Two Kinds of Inter-Planting on Soil Nutrition of Camellia oleifera Forest

To investigate the effects of inter-planting legume on soil nutrition of Camellia oleifera forest, soybean and peanut were cropped in C. oleifera forest. Variations of organic matter, nitrogen, phosphorus, potassium, available nitrogen, available potassium and available phosphorus of soil were detected. The results showed that both soybean and peanut improved the soil of C. oleifera forest. Compared with the control group, the organic matter and phosphorus did not improve effectively but the nitrogen, phosphorus, potassium, available nitrogen, available potassium of soybean and peanut respectively increased significantly. These two crops could be utilized to inter-planting in C. oleifera forest. The soil nutrition contents of soybean group were higher than those of the peanut group. The soybean was more suitable than peanut for inter-planting in C. oleifera forest.