中国水稻科学

中国水稻科学

• 研究报告 • 上一篇    下一篇

免耕覆草旱作条件下水稻的生长特性

王 栋1,李大明1, 李辉信1,秦江涛1, 2,胡 锋1, *   

  1. 1南京农业大学 资源与环境科学学院， 江苏 南京 210095； 2中国科学院 南京土壤研究所， 江苏 南京 210008； *通讯联系人, E-mail: fenghu@njau.edu.cn
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-09-10 发布日期:2009-09-10

Growth Characteristics and Yield of LateSeason Rice under Notillage and Non-Flooded Cultivation with Straw Mulching

WANG Dong1, LI Da-ming1, LI Hui-xin1, QIN Jiang-tao1,2, HU Feng1, *   

  1. 1College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; 2Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; *Corresponding author, E-mail: fenghu@njau.edu.cn
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-09-10 Published:2009-09-10

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摘要： 通过田间定位试验，研究了免耕覆草旱作、免耕裸地旱作和免耕水作3种栽培方式对晚稻生长状况和产量的影响。结果表明，免耕覆草旱作水稻产量与免耕水作差异不大，但两者明显高于免耕裸地旱作。与免耕裸地旱作相比，免耕覆草旱作明显提高水稻的有效穗数和每穴总粒数。免耕覆草旱作水稻可获得与免耕水作相当的地上部干物质量。与免耕水作相比，免耕旱作显著降低抽穗期水稻功能叶叶面积。与免耕裸地旱作相比，免耕覆草旱作明显提高灌浆期水稻总根长和根数。

关键词: 水稻, 免耕, 旱作, 秸秆覆盖, 生长发育, 产量

Abstract: A longterm field experiment (started at 2003) was conducted to determine the effects of different rice cultivation methods on growth characteristics and yield of lateseason rice under doublerice cropping system in seasonal drought region of southeast China (Yujiang County, Jiangxi Province). The rice cultivation included notillage and nonflooded rice cultivation with straw mulching (NSM), notillage and nonflooded rice cultivation without straw mulching (NZM), and notillage and flooded rice cultivation (NF). The results obtained in 2007 showed that there was no significant difference in rice grain yield between NSM and NF treatments. However, the rice grain yields under NSM and NF treatments were significantly higher than that under NZM treatment, respectively. The effective panicle number and total grain number per hill of rice were significantly higher under NSM treatment than under NZM treatment. The aboveground dry matter of rice in NSM treatment was similar with that in NF treatment. Compared to NF treatment, NZM and NSM treatments significantly decreased the leaf area at the heading stage. Compared with NZM treatment, NSM treatment could significantly increase total length and number of roots at the grainfilling stage.

Key words: rice, notillage, nonflooded cultivation, straw mulching, growth characteristics, yield