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第1期砂妥黑土的发生过程与墟:￡特征……………(1)东北地区自浆土与淮北岗地自浆士微形卷学。 特征的比较………………………………(5)-泅洪县砂姜黑上磷素肥力现状阳磷肥,。6-…~il施 用问题……………………………………(8)神农架垂赢带土壤养分状况及林术立地条件 …………
The first stage of the integrity of the black sand process and the market: £ Characteristics ............... (1) northeast of self-pulp soil and Huaibei post-mortem micro-curl. Comparison of characteristics .................................... (5) - Status of Phosphorus Fertility in Shajing County of Yunhong County. 6- ... ~ il application problems .......................................... (8) Shennongjia vertical win the soil nutrients and forest site conditions ............