calcarious

A Study on Phosphorus Transformation and Residual Effect of Phosphate Fertilizer in Calcarious Soil

石灰性土壤中磷肥后效及磷素转化规律的研究

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So the peach chlorosis on calcarious purple soil was diagnosed as iron deficiency.

故诊断将石灰性紫色土桃黄化病为缺铁所致。

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Effect of winter sown Chinese vetch on soil enzyme activity in calcarious dirt soil is studied.

研究在石灰性烂田中冬种紫云英对土壤酶活性的效应。

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In calcarious soil, the correlations between the refuse application rates and lettuce yield were expressed by logarithmic models perfectly and the marginal yield decreased as the refuse application increased, similar to the effect of fertilizer.

在石灰性土壤上，莴笋产量与垃圾用量间的关系符合对数模型，其边际产量随垃圾用量增加而减少，与一般肥料效应相似；

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Results showed that application of potassium fertilizer can significantly increase grain yield under the calcarious soil conditions of Changling county.

结果表明，在长岭县石灰性土壤条件下施用钾肥增产效果明显。

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Research on Soil Microelements: Forms of Manganese in Calcarious Soils

河北省石灰性土壤中锰的形态研究

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The residual effect and the fixation and transformation principles, the efficiency of water-soluble phosphorus fertilizer during experiment period on a calcarious soil are studied from 1982 to 1989.The economic efficiency of different distributions is also evaluated.

对河北省低磷石灰性土壤磷肥后效以及试验周期中水溶性磷肥的固定转化规律及其有效性进行了研究，并对磷肥不同分配方式的经济效果做了评价。

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