ペースト肥料による水稲の初期生育抑制障害と障害に対する資材の施用効果
スポンサーリンク
概要
- 論文の詳細を見る
The author investigated the regional growth disorders of early-planted rice, of which initial growth is severely and peculiarly inhibited, causing yellow stunting of lower leaves and no increase in stem number after approximately 30 to 40 d of transplanting, to paddies supplemented with a basal paste-like fertilizer at the row sides. No specific responses were found among rice varieties. The field experiments and soil analysis of paddies were carried out; firstly to reproduce the disorders in the late planting of rice, and secondly, to diagnose the components of a commercial fertilizer which has been effectively used by a farmer to recover the disorders. The results obtained were as follows; 1) Disordered paddies contained appreciable amounts of ammonium nitrogen in the soil, indicating no effects of nitrogen deficiencies to rice plants. 2) The specific growth disorders of yellow stunting were also found in the late-planted rice cultivation. Furthermore, the application of a granular fertilizer at the row sides showed less growth disorders as compared to the paste-like fertilizer when they were treated in the same experimental paddy. 3) An experiment to separate the farmers practical fertilizer into a few nutrients for diagnosis showed that any nutrient other than sulfate contributed less to recover the disorders. Consequently, in the following early rice planting experiment, in which the growth disorders by paste-like fertilizer were also induced, the application of magnesium sulfate responded well for recovery within several days under a submurged condition, whereas the recovery by surface drainage took more than 10 d. As a conclusion, the author suggests the disorders will be induced primarily by developed soil reduction, hence causing nutritional disorders in rice plants related to temporary sulfate starvation in the soil.
- 社団法人日本土壌肥料学会の論文
- 2000-08-05
著者
関連論文
- 輪換畑における土壌類型別暗渠排水法と水質保全効果
- 10 有機物連用が水田土壌の微生物バイオマスおよび可給態養分に及ぼす影響(中部支部講演会要旨(その3))
- クロロホルムくん蒸抽出法による湛水前水田土壌中の微生物バイオマス窒素の定量
- 1-6 輪換畑における土壌類型別水質保全的暗渠排水法(1. 土壌物理)
- 水稲の硫黄欠乏による栄養障害と硫黄吸収特性
- 水稲の初期生育抑制障害発生に伴う水田土壌中の硫黄含量の変化とその実態
- ペースト肥料による水稲の初期生育抑制障害と障害に対する資材の施用効果
- 5 草地土壌のイオウ供給力(第4報) : 土壌カラム内でのイオウの移動(関東支部講演会講演要旨)
- 8-11 草地土壌のイオウ供給力(第5報) : 火山灰土壌におけるイオウの化学形態(8.畑・草地および園地土壌の肥沃度)
- 牧草および野草のイオウ含量 : 草地におけるイオウの分布および牧草の硫酸根肥料に対する反応(第2報)
- 野草地土壌のイオウ含量に及ぼす二, 三の要因 : 草地におけるイオウの分布および牧草の硫酸根肥料に対する反応(第1報)
- JOHNSON-NISHITA法イオウ定量のセミミクロ蒸留による改良法
- 8-31 草地土壌のイオウ供給力(第3報) : 窒素施用量の差異が牧草のSレスポンスにおよぼす影響(8.畑・草地・園地土壌の肥沃度)
- 24 草地土壌のイオウ供給力(第2報) : 自然草地のイオウ肥沃度および牧草のイオウ欠乏(関東支部講演会講演要旨)