成都平原杂交稻机械化直播技术研究初报

机直播具有一次性完成开沟、播种、施肥、覆盖,工作效率高的特点和优点。2007年我们选用中长粒型的优质高产杂交稻品种川香9838在成都平原开展了机直播技术研究。结果表明:在成都平原早茬口稻田,4月15日前播种,用种量为18kg/hm2,播种后浸灌1次,出苗后加强水肥管理,可以获得9000kg/hm2左右的较高产量,比塑盘育秧移栽节本增效2415元/hm2;而且杂交稻机直播具有分蘖早,分蘖能力强,群体形成快的特点。

Preliminary Study of Techniques on Direct Seeding with Machine in Chengdu Plain

Furrowing, sowing seed, applying fertilizer and soil sealing in one time, and higher work efficiency were advantage and characteristics of direct seeding with machine. Choosing hybrid rice varieties Chuanxiang9838 with good quality, high yield and middle or long granular style studied the techniques of direct seeding with machine in Chengdu plain. The results indicated that sowing seed before 15 April, seed rate 18kg/ha, irrigation one time after planting, reinforcing management about fertilizer and water could get higher yield about 9000kg/ha in paddy field with early crops for rotation in Chengdu plain. Compared with transplanting with hand, direct seeding with machine could increase economic efficiency 2415 yuan/ha, and tillering early, tillering ability strong and forming colony fast through direct seeding with machine.