| 覆膜旱作稻N、P、K养分利用特征 |
| |
| 引用本文： | 路兴花,吴良欢.覆膜旱作稻N、P、K养分利用特征[J].土壤通报,2002,33(6):421-424. |
| |
| 作者姓名： | 路兴花 吴良欢 |
| |
| 作者单位： | 浙江大学环境与资源学院,浙江,杭州,310029 |
| |
| 基金项目： | 国家自然科学基金项目(39970146)，浙江省科技厅重点项目(011102187)资助 |
| |
| 摘 要： | 在田间试验条件下对覆膜旱作稻体内N、P、K养分浓度、吸收动态及N肥利用率作了研究。结果表明,相同施肥处理条件下不同生育期覆膜旱作稻N、P、K养分浓度及吸收量均高于水作稻,尤以生育中后期较为明显;覆膜旱作稻全生育期N、P、K养分吸收量明显高于水作稻,分布在籽粒中的N、P、K养分含量也有所提高,而在整株中的占有率差异不大,N肥利用率提高12%左右。
|
| 关 键 词： | 覆膜旱作 NPK吸收量 NPK浓度 N肥利用率 水稻 |
| 文章编号： | 0564-3945(2002)06-0421-04 |
| 修稿时间： | 2001年10月30 |
The Utilization of Nitrogen,Phosphorous and Potassium for Film Mulched Rice |
| |
| Abstract: | The nitrogen(N),phosphorous(P) and potassium(K) uptakes,N,P,and K concentrations dynamics of film mulched rice plant as well as fertilizer N use efficiency (NUE) were studied on field experiment.The results showed that N,P and K uptakes and concentrations were higher in film mulched rice than in paddy rice,while appling equal fertilizer at all growth stages,especially in middle and later stages.Total N,P and K uptake rates were significantly higher in film mulched rice than in flooded rice.NUE increased by near 12% in film mulched rice. |
| |
| Keywords: | Film mulched cultivation NPK uptakes NPK concentration nitrogen fertilizer use efficiency Oryza sativa L |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
