油茶新造林套种花生试验初报

在新造林第2年的油茶林地中套种花生良种"桂花21号",从套种对油茶生长的影响、经济效益以及套种后林地的土壤肥力三个方面对油茶林套种花生的可行性进行了研究。结果表明,油茶林地套种花生未对油茶幼龄植株生长造成明显影响;每公顷油茶林地中套种0.6hm2"桂花21号",产量可达2 641.32kg,有效面积产量明显高于全国平均水平,但由于未能机械化作业导致人工成本较高,其利润仅为3 306.25元.hm-2,有效面积利润要低于全国平均水平;套种花生过程大量施入磷肥能明显改善土壤中有效磷含量,但却降低了土壤有效钾含量。油茶新造林套种花生具有一定的可行性,"桂花21号"适合用于油茶新造林内套种。

A Preliminary Report on the Intercropping Peanut in the New Oil Tea Plantation

An experiment was carried out in intercropping peanut within a 2-year-old Camellia oleifera plantation cultivated with an improved variety named "Guihua 21".The feasibility of intercropping was studied from the aspects of the impact of the intercropping on the growth of Camellia oleifera,economic benefits from intercropping,and the consumption of the soil fertility of the intercropping.The results showed that no significant side effects were observed on the growth of young Camellia oleifera seedlings caused by the intercropping.The yields of the peanut were reached to 2 641.32 kg after 0.6 hectares of "Guihua 21" were intercropped per hectare of Camellia oleifera plantation,significantly higher than the national average yield.However,the profits were just 3 306.25 yuan RMB·hm-2 because lack of mechanization led to the higher labor costs,less than the national average yield.Fertilizing with a large amount of phosphates to peanut could improve soil phosphorus content,but reduced available potassium content in the soil.Thus,it is feasible to intercrop peanut in new Camellia oleifera plantations,and "Guihua 21" is suitable cultivar for inter-planting.