香蕉园土壤养分肥力时空变化研究

对香蕉园土壤养分肥力的研究是制定香蕉养分管理策略的基础。本研究采集了广东省香蕉主产区果园土壤样本110个,评价土壤养分肥力现状,并与第二次土壤普查结果相比,探讨养分肥力的时空变化。结果表明香蕉园土壤养分肥力整体上较高,缺素少,而硼是普遍缺乏的元素;与20世纪80年代初相比,香蕉园土壤养分肥力已经发生很大变化,主要表现为有机质明显下降、有效磷和速效钾的显著提高。从化肥消耗量变化、施肥结构及香蕉种植模式三方面探讨了时空变化的主要原因。

Temporal and Spacial Variation of Nutrient Fertility on Banana Plantation

Researches on soil nutrient fertility on banana plantation is the basis of working out the nutrient management strategy.Soil samples(110) were collected in Guangdong banana plantations to evaluate the soil nutrient fertility status by the criteria of National Second Soil Survey.Also,soil analysis result was compared with that of the Second Soil Survey(Guangdong) to reveal the Spatio-temporal variation.Generally,at present,soil nutrient fertility in banana plantation was higher with less deficient elements,and B was the most commonly deficient.Compared with the early 1980's,soil fertility of banana plantation shifted greatly,summarized as obviously decrease of organic,significantly increase of available P and K.The Spatio-templral variation was mainly contributed to consumption trend of chemical fertilizer and its composition,and banana cultivation model as well.