论文部分内容阅读
二、关于旱地土壤的研究 第二次世界大战以前 在明治维新以前,日本的农业偏重于水稻,对于旱作物则一向比较轻视。 明治以后随着荒地的陆续开垦,旱地土壤面积逐年增加,但当时对旱地的土壤肥料工作做得不多。 在明治初期各农业试验场和农业大学招聘了李比西无机营养学派的德国技术人员开始研究土壤的无机成分,继之关于钙镁率试验研究的发展,查明了钙、镁对小麦、大麦具有显著的效果,并进一步研究了氯化铵对小麦、大麦的阻害作用。 另一方面由土壤分析及肥效试验注意到土壤反应对作物生长的关系很大,遂对酸性土壤的特性和分布作了很多调查研究。这些研究为以后的旱地土壤研究奠下了重要的基础。
Second, the study on dry land Before the Second World War Before the Meiji Restoration, Japan’s agricultural emphasis on rice, dry crops have always been more contemptuous. With the successive reclamation of wasteland after the Meiji period, the area of dry land increased year by year, but soil and fertilizers work on dry land was scarce at that time. In the early stages of the Meiji agricultural experiment sites and agricultural universities recruited Libisian inorganic nutrition school of German technicians began to study the inorganic components of soil, followed by the development of calcium and magnesium test on the development of the identified calcium and magnesium on wheat, barley Has a significant effect, and further study of the ammonium chloride on wheat, barley’s role in the prevention. On the other hand, from the soil analysis and fertilizer efficiency test, it is noticed that the soil reaction has a great relationship with crop growth. Therefore, many investigations have been made on the characteristics and distribution of acid soil. These studies have laid an important foundation for future research on dryland soils.