|Title:||Effects of corn residues on the subsequent soybean crops||Other Titles:||玉米植株殘留物對大豆[Glycine max (L.) Merr.]生長與產量之影響||Authors:||Chwen-Ming Yang
|Keywords:||Corn;Plant residues;Soil nutrients;Soybean;Growth;Yield;Rotation;玉米;植株殘留物;土壤營養元素;大豆;生長;產量;輪作||Issue Date:||28-Aug-1992||Publisher:||中華農藝學會||Journal Volume:||3||Journal Issue:||1||Start page/Pages:||13-23||Source:||中華農藝||Abstract:||
Field study was conducted on a silt loam soil (fine-loamy, mixed, nonacid, hyperthermic, Fluvaquentic Dystroochrept) at the ex-perimental farm of Taiwan Agricultural Research Intstitute to compare the growth and yield of soybean [Glycine max (L.) Merr. var. Nung-Yu No. 7] grown with or without corn residues in the summer crop of 1991 and the spring crop of 1992. Four levels of corn residue treatments were made, i.e., 0 (control), 1/2 x (half), x (full), and 2 x (double). The changes of soil properties were also investigated. The results showed that effects of corn residues varied in growing seasons and the amount incorporated. Corn residues stimulated seedling emergence in both crops, a 6% and 9% increase was observed by double residues treatment in Summer and Spring, respectively. Full amount of residues elevated leaf area and plant dry weight only in the summer crop. The pH of soil was not changed by the incorporation of corn residues, whereas the measured nutrient elements (N and K) were gained by full amount of residues incorporated into the soil in Summer crop. No significant differeces were revealed in nodule number, nodule dry weight, and the effective plant percentage calculated at harvest by corn residue treatments. However, generally less weeds were collected in soils treated with corn residues in Summer and in Spring since April. Seed yield was significantly increased, from 50 to 79%, in Summer crop but not in Spring crop. The results suggested that soybean may be benefited from corn residues in the summer growing season.
在臺灣省農業試驗所農場進行，以比較土壤混入玉米植株殘留物對大豆生育與產量之影響，同時調查土壤酸驗值、有機質、及營養元素（土壤全氮、有效性磷及有效性鉀）之變化，以瞭解玉米植株殘留物對土壤之效應。根據試驗结果，玉米植株殘留物可提高大豆幼苗出土百分比，在兩倍 量玉米殘留物下夏、秋作分別增加6%及9%。除了在生育早期之外，大豆生長似亦受到玉米殘留物促進，即在玉米植株殘留物處理土壤生長之大豆其株高、葉數與葉面積均略增加，而累積較多乾物質。此一差異在夏作更為明顯。土壤酸驗值、有機質及有效性磷雖未明顯改變，混入玉米植株殘留物之夏作區土壤則有較高氮素及有效性鉀含量。而且經殘留物處理之夏作大豆田區雜草量遠較對照土壤區為低，但是根瘤數與重量無差異。收獲 時，處理間有效大旦植株百分比雖無顯著差別，但生長在以玉米植株殘留物處理區之夏作大豆獲得較高產量，增產50至79%。
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