寒地水稻分期播种试验研究

针对黑龙江省无霜期短、有效积温少等气候特点,利用晚熟水稻品种,通过分期播种,培育大苗壮秧方式,探索水稻高产栽培的最佳播种时期。研究结果表明,寒地水稻适当早播,培育带蘖大苗壮秧,有利于干物质生产和积累,提高秧苗充实度,增强抗逆能力,穗粒数增多,水稻易获高产。本试验4月11日播种的产量较高,播期过早或过晚,均导致水稻减产。

Test Disquisition on Rice Inseminate in Installments at Cold-field

Result indicate that inseminate early and properly, breed big seedling and strong fry is propitious to manufacture and accumulate dry matter, make seedling substantiate, boost up counteractive ability, increase grain of fringe and gain high yield easily. It can gain the higher yield when inseminate in Apr 11, neither early nor late is propitious to gain high yield.