<FONT face="Verdana">免耕覆草旱作条件下水稻的生长特性</FONT>

王 栋,李大明, 李辉信,秦江涛胡 锋,

doi:10.3969/j.issn.10017216.2009.05.11

中国水稻科学 >

2009 , Vol. 23 >Issue 5: 517 - 522

DOI: https://doi.org/10.3969/j.issn.10017216.2009.05.11

研究报告

免耕覆草旱作条件下水稻的生长特性

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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

网络出版日期: 2009-09-10

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

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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 date: 1900-01-01

Revised date: 1900-01-01

Online 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

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王栋,李大明, 李辉信,秦江涛胡锋, . 免耕覆草旱作条件下水稻的生长特性[J]. 中国水稻科学, 2009 , 23(5) : 517 -522 . DOI: 10.3969/j.issn.10017216.2009.05.11

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

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