摘要
为探讨菌渣还田对红壤肥力和水稻生长的影响,在盆栽试验条件下,研究不同比例菌渣与化肥配施对水稻生育期内土壤养分动态变化和水稻生长的影响。研究表明:高用量菌渣各处理均显著提高了收获期土壤有效磷含量,高用量菌渣与高用量化肥配施显著提高了收获期土壤有机质含量,高用量菌渣与中、低用量化肥配施显著提高了土壤速效钾含量,但是各处理间土壤碱解氮含量差异不明显;在低菌渣用量下,水稻叶片SPAD指数随着化肥施用量的增加而增加,在高菌渣用量下,水稻叶片SPAD指数没有显著增加;高量化肥与高量菌渣配施获得稻草生物量和稻谷产量都最高,经济系数最大。
In order to investigate the effect of edible fungus residue on soit fertility, dynamic changes of soil nutrients contents and rice growth were monitored in a pot experiment. Results showed that, at rice harvest, soil available phosphorus content increased significantly under application of the highest rate of edible fungus residue, while soil or- ganic matter content increased significantly under combination of the highest rate of edible fungus residue with high rate of chemical fertilizer. Meanwhile soil available potassium content increased significantly under combination of the highest rate of edible fungus residue with medium or minimum rate of chemical fertilizer. However, soil available ni- trogen content showed no difference among all treatments. Leaf SPAD index became greater with the increasing rate of chemical fertilizer application, but it appeared that leaf SPAD was little affected by edible fungus residue application. The highest rice grain yield and economic coefficient were gained under combination of the highest rate of chemical fertilizer with high rate of edible fungus residue.
出处
《浙江农业学报》
CSCD
北大核心
2013年第1期147-151,共5页
Acta Agriculturae Zhejiangensis
基金
浙江省农业技术推广基金会项目(2045210055)
浙江省科技创新活动(2011R412025)
浙江农林大学研究生科研创新基金项目(3122013240144)
浙江省自然科学基金项目(Y1100762)
关键词
菌渣
有机质
土壤速效养分
水稻产量
edible fungus residue
soil organic matter
soil available nutrients
rice yield
