根据水稻生育进程叶龄模式进行“深—浅—晒—间—润”合理灌溉

本文首先简要介绍了水稻生育进程叶龄模式栽培体系,接着分析了叶龄模式灌溉技术的基本原理。在此基础上详细介绍了“深—浅—晒—间—润”灌溉技术的实施要点,即浅水插秧,深水活棵;浅水分蘖,适当露田;够苗搁田,先轻后重;间歇灌溉促穗发,始穗前轻搁一次,抽水期以浅水为主;齐穗后干湿交替保通气,湿润灌溉促粒重。文中还对这种灌溉技术的增产节水效果和经济效益进行了分析,与浅水勤灌相比,增产幅度达4.0～11.8％,节水幅度达11.5～62.2％,每亩净收入增加22.1～35.4元。本文最后分析了这种灌溉技术的增产节水原因。

An Advanced Irrigation Technology Based on the Leaf-aged Model of Development Process of Rice

In this paper, the cultivation System of the leaf-aged model (LAM) of development process of rice is briefly introduced and then essential principle of irrigation technology (IT) of LAM is analysised. The key putting the IT of LAM into effect is detailedly recounted, which include ①keeping shallow water to transplant rice seedlings and deep water to return green; ② irrigating frequently in shallow water and proper showing field to promote effective tillering; ③sun baking field twice which the front is gentle and the latler severe when the number of stem is once enough,④intermittently irrigating to promote booting meanwhile field is gently baked befor heading beganning and shallow water is kept on heading period; ⑤ wettly irrigating to enhance aeration and raise grain weight after complet earing. Additionaly, the effect of production increase and water save and the economic benefit is analysised. Yield of the IT is 4.0-11.8% higher; water consumption 11.5~62.2% less and net income per mu 22.1~35.4 yuan more than one which irrigate frequently in shallow water. Lastly, the reason for higher yield and less water consumption is ana-lysised.