摘要
麦—稻—稻三熟制10年29季定位试验结果：单施化肥虽能维持一定的产量，但土壤碳、氮出现亏缺，土壤物理性状差；有机肥化肥配施能培肥地力和改善土壤物理性状而取得较高产量；嘉湖平原区稻田土壤具有优厚的地力贡献，是持续高产的基础；据测算，嘉湖平原稻田每ha年施有机肥22500kg、氮素225kg水平，可维持土壤肥力，取得持续高产效果。
Results from a 10 years long-term experiment of 29 crop seasons under barly-rice-rice croppingsequence showed that the application of chemical feni1her alone kept moderate yicld but led a decreasingof soil C and N contents and a poor physical properties in soil; while combined application of organicmanure and chemical fertilizer got rather higher yield, and promote the soil productivity with agood soil physical properties. The paddy field soil of Jiahu Plain possesses an excellent funetion of soilcontribution, which is a base for obtaining the successive high yields. The present annual application of22500 kg/ ha of organic manure and 225 kg / ha of fertilizer nitrigon seemed to be enough in maintainingthe soil fertility and a successive high yields.
出处
《浙江农业学报》
CSCD
1995年第3期161-164,共4页
Acta Agriculturae Zhejiangensis
关键词
嘉湖平原
稻田
施肥
土壤肥力
Jiahu plain
Paddy fields
Fertilization, Soil fertility
High yield
