行政院農業委員會台南區農業改良場  研究彙報第44號
 

水稻直播及節水栽培對水稻用水量及質量之影響

蔣汝國 黃小珍

摘  要

蔣汝國、黃小珍。2004。水稻直播及節水栽培對水稻用水量及質量之影響。臺南區農業改良場研究彙報44:43~58。

本研究自八十八年一期作起至九十年二期作止在臺南縣六甲鄉進行,試驗處理分為直播節水、直播輪灌及插秧輪灌等三種處理,插秧輪灌為對照處理。目的在探討水稻直播及節水的栽培方式對水稻質量、用水量之影響以及其經濟效益。結果顯示,在用水壓力大的一期作若採用節水灌溉可節省25.6~38.8%的灌溉用水量而不影響水稻之質、量。一期作若採用直播機實施直播水田栽培,其成本較插秧栽培節省8.9%,若採用人工撒播可節省13.0~15.6%。二期作若採用人工撒播可節省17.2%,採落粒栽培節省17.6~21.7%。直播栽培成本較低,而產量與插秧栽培相當。

關鍵詞:水稻、直播栽培、落粒栽培、節水栽培、水稻用水量

接受日期:2004年7月5日


Studies on the Effects of Direct-seeding and Water Saving Culture on the Water Requirement, Yield and Quality of Rice

Chiang, J. K. and S. C. Huang

Summary

The experiment was carried out in the paddy field of Liu-Chia, Tainan prefecture from 1999 to 2001. Three treatments, namely the direct seeding with water saving culture, the direct seeding with rotational irrigation culture and the transplanting with rotational irrigation culture were tested in this experiment to investigate the effects of the direct-seeding culture and the water saving culture on the water requirement, yield and quality of rice and the economic benefits.  The result showed that the water saving culture could save 25.6~38.8% of irrigation water in the 1st crop which deficient in water resources. The production costs of the direct-seeding culture could reduce8.9%, or 13.0~15.6% when sowing by sowing machine or by hand sowing, respectively, compared to the transplanting culture in the 1st crop and in the 2nd crop it could reduce 17.2%, or 17.6~21.7%, respectively, when sowing by hand or volunteer rice in not influenced the yield and the quality of rice.

Key words: Rice, Direct-seeding culture, Volunteer rice, Water saving culture, Water requirement for rice.

Accepted for publication: 5 July, 2004


 

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