SOIL-PLANT NUTRITION STUDIES ON TROPICAL RICE : VI. The Effect of Different Levels of Nitrogenous Fertilizer Application on Plant Growth, Grain Yield, and Nitrogen Utilization by Rice Plants

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概要

• 論文の詳細を見る

• The effect of different levels of nitrogenous fertilizer application on plant growth, grain yield, and both the amount of soil nitrogen and applied fertilizer nitrogen utilized by plants was investigated in the Bangkhen paddy field. The results furnished clear evidence that the recoveries of added fertilizer nitrogen by plants were increased along with an advance in plant growth, and that the plant uptake of soil nitrogen was independent of the nitrogen level applied. A linear relation was found between total nitrogen absorbed by plants and the levels of nitrogen applied indicating that the extrapolated yield of the nitrogen value could be used for the evaluation of the soil nitrogen supply. The present study demonstrated also the importance of examining the proportion of two kinds of nitrogen in plants, one derived from fertilizer and the other from soil nitrogen, in the evaluation of the fertilizer effect, and made it clear that the evaluation of fertilizer effect based only on the quantity of fertilizers absorbed by plants represents only a part of the whole picture.

• 社団法人日本土壌肥料学会の論文

著者

• KOYAMA TAKEO

  National Institute of Agricultural Sciences

• Koyama Takeo

  National Institute Of Agricultural Sciences Technical Division Rice Department Ministry Of Agricultu

• NIAMSRICHAND Natee

  National Institute of Agricultural Sciences, Technical Division, Rice Department, Ministry of Agricu

• Niamsrichand Natee

  National Institute Of Agricultural Sciences Technical Division Rice Department Ministry Of Agricultu

関連論文

• STUDY ON THE IMPROVEMENT OF FERTILIZER DRESSING AND SOIL MANAGEMENT IN THE RICE FIELD : Field Experiment on Rice Using 32-P Labeled Fertilizer
• SOIL-PLANT NUTRITION STUDIES ON TROPICAL RICE : II. Rice Varietal Differences in Absorbing Phosphorus from Soil Low in Available Phosphorus (Part 2)
• SOIL-PLANT NUTRITION STUDIES ON TROPICAL RICE : VI. The Effect of Different Levels of Nitrogenous Fertilizer Application on Plant Growth, Grain Yield, and Nitrogen Utilization by Rice Plants
• SOIL-PLANT NUTRITION STUDIES ON TROPICAL RICE : V. Yield Components as Affected by the Timing of Top-dressing of Nitrogen in the Bangkhen Paddy Field
• SOIL-PLANT NUTRITION STUDIES ON TROPICAL RICE (I) : Studies on the varietal differences in absorbing phosphorus from soil low in available phosphorus (Part 1)

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