水稲の土壌窒素吸収量と積算気温との関係のロジスティック曲線による解析
スポンサーリンク
概要
- 論文の詳細を見る
Three varieties of paddy rice, "Musashikogane", "Asanohikari" and "Yumeminori", transplanted late in May, were cultivated an under no-nitrogen condition. The relation between quantily of soil niLrogen absorption and accumulated value of mean air temperature (accumulated temperature) was applied to a logistics curve and the process of soil rlitrogen absorption by paddy rice was quantitatively analyzed. 1) For all three varielies of paddy rice, Musashikogane, Asanohikari and Yumcminori, the actually measured values agreed well with the equation of Soil nitrogen absorption quantity estimated by accumulated temperature, which was applied to the three-dimensional λ-type logistic curve. Hence. it was concluded that this equation accurately expressed the actual soil nitrogen absorbing process. 2) The quantity of Soil nitrogen absorption by paddy rice increased exponentially till the accumulated temperature reached 920℃ for Musashikogane and 1020℃ for Asanohikari and Yumeminori, and then gradually increased. 3) The quantity of soil nitrogen absorption by paddy rice from the time of transplanting to maturing stage estimated by the accumulated temperature of the normal value was 74 kg ha^<-1> for Musashikogane, 79 kg ha^<-1> for Asanohikari and 72 kg ha^<-1> for Yumeminori. 4) The ratio of soil nitrogen absorption by paddy rice among maximum tillering stage, panicle formation stage and heading time estimated by the accumulated temporature of the normal value was 33% till the maximum tillering stage, 61% till the panicle formation stage and 77% till the heading time for Musashikogane. In the same way, for Asanohikari the ratios were 30%, 61% and 82%, respectively, and for Yumeminori 31%, 64% and 80%, respectively. 5) The quantity of soil nitrogen absorption by paddy rice per day estimated by the accumulated temperature of the normal value peaked at the time of maximum tillering stage. It was on the 39th d before heading time for Musashikogane, 35th d for Asanohikari and 41st d for Yumeminori. After the maximum tillering stage, it decreased gradually till the heading time, but the rate of decrease was smaller after the heading time.
- 社団法人日本土壌肥料学会の論文
- 1998-02-05
著者
関連論文
- 16-2 埼玉県耕地土壌における肥料及び有機物施用の土壌化学性変化に及ぼす影響の解析(16.畑地土壌肥よく度,2009年度京都大会)
- ノニルフェノールの農作物における動態と水系流出機構の解明
- 34.埼玉県下で発生した水稲青枯れの実態と青枯れ水稲の栄養生理について(関東支部講演会講演要旨)
- 79 光化学オキシダントが大豆の生育に及ぼす影響(第1報) : 大豆の品種間差について(関東支部講演会講演要旨)
- 20 可給態窒素診断による小麦の高品質栽培方法(関東支部講演会)
- ロジスティック曲線による水稲の土壌窒素吸収量の推定
- 水稲の土壌窒素吸収量と積算気温との関係のロジスティック曲線による解析
- 農村集落排水処理汚泥の水稲,小麦への施用効果
- 76 ランドサットTMデータによる地表被覆物の分類、及び水田裏作麦の作付状況の推定(関東支部講演会要旨)
- 51 農村集落排水処理汚泥の水稲への施用効果(関東支部講演会要旨)
- 光化学オキシダントによる農作物被害について
- 家畜ふん・コーヒー粕堆肥の窒素無機化推定とその水稲への影響