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首页> 外文期刊>Annals of Agricultural Research >STUDIES ON RELATIONSHIP OF NUTRIENT AVAILABILITY INDICES P FRACTIONS WITH PRODUCTIVITY AND UPTAKE FOLLOWING ROCKPHOSPHATES APPLICATION IN MOUNTAIN ACID SOIL
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STUDIES ON RELATIONSHIP OF NUTRIENT AVAILABILITY INDICES P FRACTIONS WITH PRODUCTIVITY AND UPTAKE FOLLOWING ROCKPHOSPHATES APPLICATION IN MOUNTAIN ACID SOIL

机译：营养有效性指数与生产力和磷矿磷吸收的关系研究在酸性土壤中的应用。

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摘要

Phosphorus is one of the essential primary nutrient for plant growth, Most of the Indian soils particularly acidic soils are low to medium in available P (Ramamoorthy and Bajaj, 1969). The main problem in the water soluble fertilizers is that, whatever H_2PO_4 they release, most of it get fixed in acid soils Moreover water soluble fertilizers are costly for a normal farmer. Therefore, it is better to use cheaper alternate source like rockphosphate African rockphosphates like Gaffsa. Tebessa and Youssofra are more reactive as compared to mussoorie rockphosphate. Rockphosphate is slow release P fertilizers and this properly assume special significance in acid soils, where the rate of dissolution of P is generally less of a problem then its reversion to relatively less available from. It act as amendment in these soils and also add other nutrients such as Ca, Mg, Zn, Cu, Mn and Fe. It is important to work out the relationship between yield, uptake different forms of available P and different P fractions under different treatments of rockphosphate, because very less work has been done on this aspect.
机译：磷是植物生长必不可少的主要营养素之一。大多数印度土壤，特别是酸性土壤，其有效磷含量低至中等（Ramamoorthy and Bajaj，1969）。水溶性肥料的主要问题是，无论它们释放的H_2PO_4是多少，大多数都固定在酸性土壤中。此外，对于普通农民而言，水溶性肥料价格昂贵。因此，最好使用便宜的替代来源，例如岩磷酸盐，非洲岩磷酸盐，例如加夫萨。与Mussoorie磷酸盐相比，Tebessa和Youssofra具有更高的反应性。磷磷酸盐是缓释磷肥料，在酸性土壤中具有特殊的意义，在酸性土壤中，磷的溶解速率通常不成问题，然后转化为相对较少的磷即可。它可以作为这些土壤的改良剂，还添加其他营养素，例如钙，镁，锌，铜，锰和铁。重要的是要弄清产量，在不同的磷矿粉处理方式下吸收不同形式的有效磷和不同磷含量之间的关系，因为在这方面所做的工作很少。

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