Study on production effect of rice under water saving irrigation

Aimed at the severe shortage of water resource in the Yellow River irrigation district of NingXia,the field experiment was conducted to study the effects of water-saving irrigation techniques on rice,and analyze the influences of soil temperature and water condition to the growth of roots and the forming characters of stems,tillers,leaves.ears and grains of rice.Compared with conventional irrigation,controlled irrigation saved water consumption by 4 014.0 m~3/hm~2,or 39.5%,raised water production efficiency by 65.3%,and increased irrigation production efficiency by 82.1%.Water-saving irrigation was effective in fully using limited water source,and forming reasonable irrigating means to raise ear-ripening rate of rice.Therefore,it was beneficial to realize the objectives of water saving,high yield and superior quality by using controlling irrigation.