旱稻在亚、非、拉三大洲,特别是在第三世界国家粮食作物生产中占有相当重要的地位.尽管目前产量稍低,但是由于它省工、省力,便于机械化作业.所以种植面积大,范围广,目前世界旱稻面积约占水稻总面积的1/6.亚洲种植旱稻面积较大的印 Upland rice plays a very important role in the production of food crops in Asia, Africa and Latin America, especially in the third world countries. Although the current output is slightly lower, it is easy to mechanize because of its labor-saving, labor- A wide range of the world’s total area of ​​paddy rice accounts for about 1/6 of the total area of ​​paddy rice planted in Asia larger India