生态与农村环境学报 ›› 2001, Vol. 17 ›› Issue (2): 22-25,44.doi:

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覆盖旱作水稻的生物效应及吸氮特征

石英, 松进, 沈其荣, 徐国华, 李伟   

  1. 南京农业大学资源与环境科学学院
  • 收稿日期:2000-10-18 出版日期:2001-05-10 发布日期:2011-11-22
  • 作者简介:石英,男,农艺师,山西省土壤肥料工作站工作,现为南京农业大学在职博士生,主要从事氮素营养方面的研究工作。
  • 基金资助:

    国家自然科学基金 (39970449)

Biological Effect of Mulching on Upland Rice and Characteristics of N Absorption of Mulched Rice

SHI  Ying, SONG  Jin, SHEN  Qi-Rong, XU  Guo-Hua, LI  Wei   

  1. College of Resources and Environmental Science ,Nanjing Agricultural University
  • Received:2000-10-18 Online:2001-05-10 Published:2011-11-22

摘要: 研究了田间条件下旱作水稻半腐解秸秆覆盖、蚕豆秆覆盖、地膜覆盖、纸膜覆盖、生稻草覆盖 5种覆盖方式的吸氮特征 ;水稻水作与旱作的产量及其构成因素 ;水稻水作与旱作条件下灌溉水的利用效率。结果表明 ,旱作条件下水稻各部位的含氮量均大于水作 ;旱作水稻的氮素吸收、累积主要在拔节期以后 ,而水作水稻从移栽后就大量吸收氮素 ,灌浆期后很少吸收氮素 ;旱作水稻的产量以半腐解覆盖处理的最高 ,为 8415kg/hm2 ;旱作水稻耗水量只占水作耗水量的 7 14% ,旱作水稻的水分利用效率是水作的 12倍以上。 

关键词: 旱作, 水作, 水稻, 覆盖, 氮素, 生物效应, 秸秆, 节水

Abstract: Field experiments were carried out on upland rice mulched with semi decomposed rice straws,horsebean stems,plastic film,paper film or raw rice straws to study their respective effect on N absorption of the crop.In the experiment comparison was also made between paddy rice and upland rice in yield,yield components and utilization efficiency of irrigation water.It was found that the upland rice was higher than the paddy rice in N content in almost every organ.In the upland rice N absorption and accumulation occurred mainly after the jointing stage,whereas in paddy rice the absorption of large amount of N started right after transplantation and then little N was absorbed after the filling stage.The highest yield of upland rice was found in the treatment with semi decomposed rice straws as mulching,reaching 8 415 kg/hm 2,but its water consumption was only 7 14% of that of the paddy rice,about 12 times as high in water use efficiency.

Key words: biological effect, mulch, nitrogen, rice, upland paddy

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