| 长期施肥对褐潮土磷、钾状况及速效供应能力的影响 |
| |
| 引用本文： | 宋永林,张淑香,李小平,王丽霞.长期施肥对褐潮土磷、钾状况及速效供应能力的影响[J].华北农学报,2009,24(Z2). |
| |
| 作者姓名： | 宋永林 张淑香 李小平 王丽霞 |
| |
| 作者单位： | 中国农业科学院农业资源与农业区划研究所,农业部作物营养与施肥重点实验室,北京,100081 |
| |
| 摘 要： | 氮磷钾配施有机肥提高耕层土壤全磷的效果十分明显,比对照增加52.2%,而氮磷钾配施秸秆比对照增加18.85%;氮磷、磷钾、或氮磷钾配合分别比对照增加17.87%,15.88%和14.89%,明显高于长期单施氮肥,或氮钾配合处理;氮磷钾配施有机肥速效磷含量比不施肥增加10倍以上,而氮磷钾配施秸秆比对照增加3倍;氮磷、磷钾、或氮磷钾配合分别比对照增加3～5倍.单一施用氮磷钾化肥作物钾索吸收量和施钾量总体上是平衡的,氮磷钾化肥配施有机肥或秸秆具有提高土壤速效钾含量的作用,比对照分别增加16.0%和11.4%,不施钾肥处理总体上速效钾含量是逐年下降的.各处理土壤缓效钾含量多年总体上都是下降的;但与对照及不施钾处理比较,施钾处理土壤缓效钾含量较高.
|
| 关 键 词： | 长期施肥 褐潮土 磷 钾 速效供应能力 |
Effect of Long-term Fertilization on Changes and Availability Supply Capality of P, K in Fluvo-aquil Soil |
| |
| SONG Yong-lin,ZHANG Shu-xiang,LI Xiao-ping,WANG Li-xia.Effect of Long-term Fertilization on Changes and Availability Supply Capality of P, K in Fluvo-aquil Soil[J].Acta Agriculturae Boreali-Sinica,2009,24(Z2). |
| |
| Authors: | SONG Yong-lin ZHANG Shu-xiang LI Xiao-ping WANG Li-xia |
| |
| Abstract: | In comparison with CK,NPKM increased soil total P content by 52.2% ,and that in the treatment of NPK + straw increased by 18.85% ,NP,PK and NPK treatment increased by 17.87% ,15.88% and 14.89% ,respectively. Above soil total P increases were also higher than those with the treatment of N only or NK. Compared with CK, soil available P increased by 10-fold and 3-fold with the treatment of NPKM and NPK + straw,and 3 -5 fold with NP, PK and NPK. Therefore,application of chemical fertilizer alone without organic manure can keep the balance of K input and output. Addition of NPK along with pig manure and straw increased soil available K by 16. 0% and 11.4% respectively,compared with CK. The available K declined year by year in the treatments without K fertilizer. Changes of soil slow-released K followed similar trend to the available K. Therefore,long-term application of ehemieal K fertilizer or its combined application with organic materials can not only meet the K demand by crops. |
| |
| Keywords: | Long-term fertilization Fluro-aquil soil P K Availability supply capality |
| 本文献已被 万方数据 等数据库收录！ |
|
