In order to master the soil nutrient condition of LH1, Eucalyputs urophylla×E.tereticornis clonal
platation in Leizhou Peninsula and explore the impact of different land preparation methods on soil nutrient content,
soil samples were collected by"five hole comprehensive method", and 11 nutrient indexes such as soil pH value,
organic matter, alkali hydrolyzed N, available P and effective K, etc, were analyzed and evaluated, as well as the
relations between the above indexes and the three preparation methods, namely, full cultivation, trenching and hole
digging, that set up for afforestation in the study.The results showed that in soil the content of alkali hydrolyzed N is
deficient, and the content of available P and effective K were in the middle level. The content of exchangeable Ca and
Mg was lower than the critical value, the trace elements Zn was rich, Cu and Mn were moderate, and B was deficient.
Different land preparation methods is significantly associated with all soil indexes except pH value (P <0.05). The
content of organic matter, main nutrient elements N, P, K, and medium elements Ca and Mg in soil of preparation
method trenching, are higher than the methods of digging holes and full cultivation. Eucalyptus management can use
the way of trenching to increase soil nutrients. The effect of land preparation on different microelements in the soil is
also significant, and the performance is different in different soil layers. Both promoting effect and antagonistic effect
exist between soil nutrient indexes, that are closely related to land preparation methods. In production, increasing Mn
or reducing Mg to improve the situation of lack of trace element B.
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