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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.

为了在东北地区实现水稻的稳定高产，我们开发了一种深层灌溉方法，同时提高了稻田在环境保护方面的功能效益之一--蓄水功能。提高蓄水功能的主要目的是将因融雪水和雨季降雨而丰沛的河水径流入海的时间推迟到夏季，而夏季往往会出现供水短缺。我们设计了一个水管理系统，考虑到以下几点：1：为了增加稻田的蓄水功能，利用现有的堤坝尽可能深的水（最大水深，25 - 30厘米）。第二章：考虑到东北地区的稳定高产，减数分裂期的水深为25 - 30厘米，以防止低温。第三章：在供水稳定的情况下，水深不断增加，直到7月中旬水量充足时，水深控制在一个峰值。4：深灌增产，指的是一位优秀农民采用的深灌法增产技术。分析了水稻植株的生长情况。分层夹持法的结果表明，深灌法是在水稻冠层10 cm处进行的。三年来的研究表明，控释包膜肥料是提高水稻产量的有效措施之一。