| 摘要 |
<p>PURPOSE:To obtain the material for heating the paddy field, capable of easily heating the paddy field at a low cost, and further to obtain a method for heating the paddy field. CONSTITUTION:A water reaction heat-generating agent 3 generating the heat by the absorption of water or the addition of the water, such as calcium oxide, is received in a packing material 2 having air-permeating and water-permeating properties to form the material 1 for heating the paddy field. A multitude of the materials 1 for heating the paddy field are arranged in the paddy field, in its water intake, or in a water-taking creek leading to the water intake.</p> |
