@article{oai:kindai.repo.nii.ac.jp:00005098,
 author = {奥村,  俊勝 and 竹内,  史郎 and 長谷川,  浩},
 issue = {12},
 journal = {近畿大学農学部紀要, Memoirs of the Faculty of Agriculture of Kinki University},
 month = {Jan},
 note = {[Author abstract]This study was conducted at paddy field that was not manured for long years. The growth and yield of rice plants was experimented with various planting densities on this paddy field, and some of growth responses was investigated. The results of investigation were as follows; 1) The effects of planting densities on plant length was little, but on stems per hill was greater. 2) The effects on number of stems was found at the early growing period, and the increase rate of stem number in this period correlated with grain yield per hill. 3) The nutritional condition in the soil mass occupied by rice roots was an only competitive factor in this non-manured paddy field, but did not the light condition in the populations. 4) The effects of planting densities distinctly appeared to number of panicles per hill, the weight of straw per hill, and weight of hulled rice per hill. 5) The weight of hulled rice on unit land area was not effected by planting densities.[著者抄録](1)無施肥水田で栽積密度を変えて栽培した水稲の生育・収量を調査し,無施肥水田での生育反応の一部を解明した。(2)栽植密度が草丈に及ぼす影響は小さかったが,1株茎数の増加には著しい影響を与えた。(3) 1株茎数の増加に及ぼす影響は,水稲の生育初期から現われ,その原因が1株占有地積内養分量にあるので,生育初期の茎数増加速度と1株玄米収量には高い相関があった。(4)無施肥田では,光条件はほとんど競合要因にならず,個体の生育反応に及ぼす唯一の要因は,占有地積に由来する栄養条件であった。(5)栽植密度の影響を強く受ける形質は,1株穂数,1株わら重,1株玄米収量であった。(6)単位面積当り玄米収量は,栽植密度の影響をほとんど受けず,ほぼ一定収量となる傾向があったが,本実験の範囲内では,1株当り苗数をやや多くし,かつ,栽植密度を少し密にして栽培すれば,ある程度の増収が期待できると判断された。, 記念特集I, application/pdf},
 pages = {127--134},
 title = {無施肥田における水稲の生育・収量に及ぼす栽植密度の影響},
 year = {1979},
 yomi = {オクムラ, トシカツ and タケウチ, シロウ and ハセガワ, ヒロシ}
}