@article{oai:kpu.repo.nii.ac.jp:00004731, author = {青木, 朗 and 森田, 修二 and AOKI, AKIRA and MORITA, SHUJI}, journal = {京都府立大學學術報告. 農學, The scientific reports of Kyoto Prefectural University. Agriculture}, month = {Sep}, note = {殺線虫剤としてVapam (natrium methyldithiocarbamate)およびNemafume (1,2-dibromethan)を用いて土壌処理を行ない, これが土壌および植生に与える影響について栽培および室内実験を行なつた。その結果, 生育および収量においては, 対照区よりVapam処理が有効であつたがジイナ数が多いため稔実歩合が悪く稔実重において変化がなかつた。土壌のEhの変化においてはVapam処理が他の区に比べて, 初期にEhの低下が見られ, 最低電位を示す時期が1週間早かつた。根のカチオン置換容量は僅かであるがVapam区およびNemafume区が対照区より大となつた。水田および畑状態におけるアンモニアおよび硝酸態窒素の消長については水田状態の場合, 各試験区ともアンモニア態窒素が増加し硝酸態窒素が減少するという消長経過を示したが, 量的にはVapam区が最もすぐれていた。畑状態の場合はNemafume区および対照区はアンモニア態窒素が減少し, 硝酸態窒素が増加する消長経過を示したにもかかわらず, Vapam区が他の2区と逆の消長を示し, かなりアンモニア態窒素の増加が認められた。従つて部分殺菌の効果としてはVapamがすぐれていることがわかつた。, Effect of nematocides on some soil properties and rice growth was studied. The nematocides used were Vapam (Na-methyl dithiocarbamate) and Nemafume (ethylene dibromide). The results are summarized as follows : 1. The yield of rice grown on the soil treated with vapam was higher than the yield on untreated soil. However, no distinct effect was found on the weight of seed. 2. Cation exchange capacity of the root increased by the application of nematocides. 3. Oxidation reduction potential of the vapam treated soil showed lower value than the potential of the untreated soil. 4. Laboratory experiment was conducted on ammonification and nitrification in the soil. Soils were incubated under paddy field and upland field conditions. Determination of ammonium and nitrate nitrogen was run after 3,7,14 and 21 days the experiment started. The amount of both nitrogen was higher in the treated soil than in the untreated soil. The soil treated with vapam showed a degree of high amount of ammonium nitrogen compared to the untreated soil.}, pages = {106--109}, title = {土壌および植生に及ぼす Nematocide の影響(農芸化学部門)}, volume = {14}, year = {1962}, yomi = {アオキ, アキラ and モリタ, シュウジ} }