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种植制度必须随着生产条件的变革和人们对于农产品的需要而不断的改变,稻田种植制度也是一样,往往随着水利设施的改善、肥料供应的增加和人口的增加而在不断的改变,而且这种改变往往在生产上起着很大的推动作用,是农业增产的一项重要技术措施。全世界90％的种稻面积集中在亚洲,其中62％集中在东南亚地区。这些地区33％的稻田具有灌溉条件,其水稻产量则占57％,传统的种植制度多种多样,一熟,两熟、三熟兼而有之,水稻连作与水旱轮作因地而不同。自1975年以来,由国际水稻研究所在国际发展研究中
The system of cultivation must constantly change with changes in the conditions of production and the needs of people for the production of agricultural products. The same applies to the system of paddy fields, which is constantly changing with the improvement of water conservancy facilities, the supply of fertilizers and population growth, and this Changes in species often play a large role in promoting production and are an important technical measure for increasing agricultural output. About 90% of the world’s rice is concentrated in Asia, of which 62% is concentrated in Southeast Asia. 33% of paddy fields in these areas are irrigated, with 57% of rice production. The traditional planting system is diverse, one-cropping, two-cropping, and three-cropping. The succession of paddy cropping differs from that of rotation. Since 1975, by the International Rice Research Institute in International Development Studies