Development of a Water storage-type Deep-irrigation Method for Rice Aimed at Increasing the Environment-protecting Function of Paddy Fields

提高稻田环保功能的水稻蓄水式深灌方法的开发

基本信息

批准号：
11556003
负责人：
GOTO Yusuke
金额：
$ 8.26万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11556003/
关键词：
Cultivation method Deep-irrigation Environmental protection Irrigation Paddy field Rice Storage of water Yield

项目摘要

We developed a deep-irrigation method to grow rice at a steady high yield in the Tohoku district, while increasing the function of water storage, which is one of the functional benefits of paddy fields in environmental protection. The main objective for the promotion of the water storage function is to delay the runoff into the sea of the river water, which is abundant due to snow-melting water and rainfall in the rainy season, until summer when there is often a shortage of water supply. We designed a water managing system taking into consideration the following points : 1 : To increase the water storage function of the paddy field, the water is made as deep as possible using the present levee (the maximum water depth, 25 - 30 cm). 2 : Considering the steady high yield in the Tohoku district, the water depth at the meiotic stage is made 25 - 30 cm, to protect from low-temperature. 3 : The water depth is increased continuously until mid July when water is abundant, assuming the water supply is steady, and the depth is controlled to have only one peak. 4 : The yield is increased by deep irrigation, referring to the yield-increasing technique of deep-irrigation method used by an outstanding farmer. The growth of rice plants were analyzed. As the result of stratified clip method, it became clear that the deep-irrigation method is put on the rice plant canopy 10 cm. Three years investigations indicated many available results, one of them is that controlled release coated fertilizer is effective in order to increase the yield.

我们开发了一种深灌溉方法，可以在Tohoku地区以稳定的高产量种植大米，同时增加储水功能，这是稻田在环境保护中的功能益处之一。促进储水功能的主要目的是将径流延迟进入河水的径流，这是由于降雪季节的水和雨季降雨而广泛的，直到夏天通常缺乏供水。我们设计了一个水管理系统，考虑到以下几点：1：为了增加稻田的储水功能，使用当前堤防（最大水深，25-30厘米）使水尽可能深。 2：考虑到Tohoku地区的稳定高收率，减数分裂阶段的水深为25-30厘米，以防止低温。 3：假设供水稳定，并且深度仅具有一个峰值，直到7月中旬水的水深度不断增加。 4：通过深灌溉提高了产量，指的是杰出农民使用的深灌溉方法的产量增长技术。分析了水稻植物的生长。由于分层夹法的结果，很明显，深灌溉方法被放在稻植物冠层10 cm上。三年的调查表明许多可用的结果，其中之一是受控释放涂层肥料有效以提高产量。