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我国北方地区近几年发展起来的水稻旱种节水种稻新技术,是在旱田状态下直播,苗期旱长,中后期进行湿润管理。这种兼具省工、省事、经济效益高和便于机械化作业的种稻方法,最突出的特点是省水。对于干旱少雨的锦州地区扩大水稻播种面积,改变锦州乃至整个辽西地区的作物构成具有重要意义。一、水稻旱种的理论依据与栽培实践水稻旱种由育苗插秧改为旱田直播,由淹水生长改为无水层管理,生态环境发生了根本变化,但仍能正常生育,开花结实并获得可观产量,这一事实说明水稻淹水栽培并不是绝对的。稻属植物分类中就有适应于淹水和旱生的
In northern China in recent years developed a new technology of dry cultivation of rice seedlings of water is in the state of direct seeding dry, seedling drought, in the late wet management. This kind of rice-growing method, which combines labor-saving, energy-saving, high economic efficiency and is convenient for mechanized operation, has the most prominent feature of saving water. It is of great significance to expand the sown area of rice and change the composition of crops in Jinzhou and the entire western Liaoning Province in arid and dry areas of Jinzhou. First, the theoretical basis of rice dry cultivation and cultivation practice Rice dry cultivation from seedling transplanting to dry field direct broadcast, from flooded growth to dry layer management, the ecological environment has undergone fundamental changes, but still normal fertility, flowering and fruiting Considerable yield, a fact that waterlogged rice cultivation is not absolute. The genus Oryza has adapted to flooding and xerophytic