水分不足がグレインソルガムの窒素吸収と転流におよぼす影響

概要

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In the previous experiments of grain sorghum, the effect of different periods of drought and various degrees of wilting on the growth, grain yield and protein content was reported, respectively. In this paper the changes in nitrogen uptake by plant and amount of total nitrogen translocated into the grains under different degrees of plant water stress was discussed and the results obtained are as follows : 1. The limitation of water supply throughout the growth cycle was observed to have inhibitory effect on nitrogen uptake and nitrogen translocation into the grains. 2. Moderate wilting conditions (first wilting) imposed at any stage of growth had no inhibitory effect on plant growth, nitrogen uptake and translocation. 3. Imposition of a short period of drought (approximately 10 days) at 6th leaf emergence stage and rewatering before wilting resulted in an increase in grain and protein yields due to enhancemant of nitrogen uptake and/or nitrogen translocation even under higher nitrogen application.
日本作物学会の論文
1980-11-30