水稻(Oryza sativa L.)的评价孟加拉国北部地区少灌溉情况下的生产

The Agriculturists Pub Date : 2017-08-04 DOI:10.3329/AGRIC.V15I1.33434

M. Islam, A. Hossain, Miah, S. Shahriar, M. Mamun

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引用次数: 1

摘要

2014年，在孟加拉国北部地区的农民田间，利用澳大利亚水稻品种BRRI dhan48进行了21次示范和2次验证试验，以加强澳大利亚(季风前)水稻的种植。在不同农户的田间进行示范小区，获得了3.5 ~ 6.5 t / hm2的粮食产量。验证试验在Mithapukur和Nilphamari Sadar Upazillas的农民田间进行，使用BRRI dhan28和BRRI dhan48作为收获马铃薯后的Braus(在Boro和Aus季节之间种植的水稻)。BRRI dhan28和BRRI dhan48的籽粒产量分别为5.0 t / hm2和6.6 t / hm2。BRRI dhan48的生长期较短(100-105天)，灌溉次数少2-3次。在旱季，BRRI dhan48代替BRRI dhan28作为Boro作物，可减少28-36%的灌溉水量。与BRRI dhan28相比，BRRI dhan48在不同农作田的产量提高了约20% ~ 60%，表明BRRI dhan48在Aus或Braus季节是一个有潜力的水稻品种。BRRI dhan48可以在马铃薯收获后栽培，也可以在马铃薯收获后栽培。该品种还可以减轻旱季水稻种植对地下水利用的压力。农学家2017;15 (1) 110 - 115

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Evaluation of Aus Rice ( Oryza sativa L.) Production in Less Irrigated Situation in Northern Region of Bangladesh

Twenty one demonstrations and two validation trials were carried out at the farmers field in the northern region of Bangladesh during 2014 using Aus rice: variety BRRI dhan48 to enhance Aus (pre-monsoon) rice cultivation. Grain yields of 3.5 to 6.5 t ha -1 were obtained from demonstrations plots conducted in different farmers field. The validation trial was conducted in the farmers field at Mithapukur and Nilphamari Sadar Upazillas using BRRI dhan28 and BRRI dhan48 as Braus (rice grown between Boro and Aus season) after harvesting potato. Grain yield of about 5.0 t ha -1 was obtained from the rice variety BRRI dhan28, while 6.6 t ha -1 was obtained from BRRI dhan48. BRRI dhan48, due to its shorter growth duration (100-105 days) required 2-3 less irrigations. About 28-36% less irrigation water was required during dry season when BRRI dhan48 was used as Braus instead of BRRI dhan28 as a Boro crop. About 20 to 60% higher grain yield was observed in different farmers field with BRRI dhan48 over BRRI dhan28, which indicated that BRRI dhan48 is a potential rice variety during Aus or Braus season. BRRI dhan48 can be cultivated after Boro harvest or as Braus after potato harvest. The variety could also decrease the pressure on ground water utilization for rice cultivation during dry season. The Agriculturists 2017; 15(1) 110-115

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The Agriculturists

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