山西石灰性土壤主要农作物施用微量元素肥效的研究

本文初步总结了1973——1981年的九年间,在山西石灰性土壤上进行的玉米、小麦、棉花施用微量元素的肥效试验。试验结果表明,在石灰性土壤中锰、锌、钼的有效量较少、铜、硼的有效量中等偏低,农作物补充施用微量元素肥料都有一定的增产效果,而不同作物对各种微量元素的肥效反应则有所差别。玉米施用锌肥,小麦施用锰肥,棉花施用锰、钼肥,能促进营养器官生长,增加叶绿素含量和光合强度,增强养分转化和干物质累积,加速繁殖器官的发育,明显地提高产量和改善品质。

The Study oF the Efficiency oF Fertilizing in Mapor Crops on the limy soil in Shansi Province with minor Elements

The plot test as well as the field test the efficiency of fertilizing the cotton wheat and Corn on the limy soil in shansi province with minor elements has been Conducted during the eight years period from 1973—1981 the results of soil analysis and field experiment are asfollows: The available components of manganese, molybdenum and Zinc in the limy soil are less than that of boron and Cupric. under the Conditions of approximately the same amount of available Component of minor element in the soil these is still different responses of the different species of crop to the fertilizer efficiency yet. For instance the application of the manganese or molybdenum fertilizer to the cotton plants resulted with a better response Whaeras the Winter or Spring whaeras as a definite response to the of Zine and the effiency of Zinc fertilizer is very significant for the corn plant. Thus it is neCessary to Conduct a fertilizer test on the limy soil to Choose the appropriate minor element. So far Seed dressing and foliage Spray are Comparatively good methods fertilization especially Seed dressing has the advantages in economy and Convenience. The application of minor element fertilizer has the advantages in less rate of application lower expenses and greater efficiency. It is worth while to Conduct further fertilizer test of minor element and to extend actively its application.