|Title:||Growth and yield responses of soybean to direct incorporation of corn residues||Other Titles:||玉米殘留物直接混入土壤對大豆生長與產量之效應||Authors:||Chwen-Ming Yang
|Keywords:||Soybean;Growth;Yield;Corn residue;Direct incorporation;大豆;生長;產量;玉米植株殘留物;植接混入||Issue Date:||17-Jan-1994||Publisher:||中華農藝學會||Journal Volume:||4||Journal Issue:||2||Start page/Pages:||137-144||Source:||中華農藝||Abstract:||
The response of a soybean (Glycine max L.) cultivar Kaohsiung sel. 10 to direct incorporation of corn (Zea mays L. cv. Tainung No. 1) residues into the soil was studied in the summer crop of 1992 and the spring crop of 1993 on a silt loam at the experimental farm of Taiwan Agricultural Research Institute. The amount of plant residue was varied to three levels. 0 (control), x (full) and 2x (double). Significant increase of pod and seed yields occurred when double amount of plant residues was incorporated into the soil directly after ear removal in both crops. Double residues increased the seed yield relative to the control treatment by 13% in the summer and by 12% in the Spring. Among yield components pod number and pod and seed weights were increased in the two growing seasons, while 100-seed weight was also increased in the summer crop. Incorporation of double amount of corn residues stimulated leaf number, leaf area, and plant weight yet decreased weeds collected from the soybean fields. When analyzing the changes of soil nutrient and moisture contents, it showed that, in general, corn residue treatments augmented more available potassium, total nitrogen and moisture in the soil during the growing seasons.
本項研究旨在探討直接混入前作玉米(Zea mays L. cv. Tainung No. 1)植株殘留物於土壤中，對後作大豆(Glycine max L.)品種高雄選十號生長與產量之效應。田間試驗分別於1992年夏作及1993年春作在臺灣省農業試驗所農場進行，試區土壤質地為坋質壤土。混入土壤之玉米植株殘留物量分為0（對照組）X（全倍量）及2X(兩倍量)等三種處理，其中全倍量相當於每公頃57100株去穗後玉米植株殘留物。根據試驗結果，土壤混入兩倍量玉米植株殘留物明顯促進大豆莢與籽粒產量，夏作及春作分別增產籽粒13與12%。在產量構成要素中，每株莢數、莢重、及籽粒重均顯著增加，而百粒重在夏作亦上升。大豆生長性狀中，以葉片數、葉面積及植株乾物重之增加最為顥著。兩咅量玉米殘留物處理亦減少大豆田間雜草數量。進一步分析生長期間土壤營養元素及水分含量後，發現混入雨倍量玉米殘留物具有提高土壤中有效性鉀，全氮及水分效果。
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