水稻新品种盐粳456配套栽培技术研究

Cultivation Technique of New Rice Variety Yanjing456

采用小区对比试验方法,探讨了播量、行距、施氮量对水稻新品种盐粳456生育及产量的影响,结果表明:在大、中、小播量,小、大行距条件下,所对应各处理单位面积最高茎蘖数、收获穗数与施氮量均呈正相关,成穗率与施氮量均呈负相关。在低氮量条件下,缩小行距,通过适宜增加基本苗数,有利于水稻增产;在中氮量条件下,提高秧苗素质,通过扩大行距,移栽适宜的基本苗数,可促进水稻增产;在高氮量条件下,只有通过提高秧苗素质,扩大行距,移栽适宜的基本苗数,才能促进水稻高产与稳产。在本试验条件下,水稻新品种盐粳456可获得733.7 kg/667 m2的产量。

Effects of sowing rate, row spacing and nitrogen rate on development and yield of Yanjing456 was studied by using small plot contrast experiment. The results showed tiller number and panicle number were positively correlated with nitrogen rate, and tiller percentage was negatively correlated with nitrogen rate. Under low nitrogen rate, reducing row spacing which increased planting density was in favor of field; under middle nitrogen rate, rice yield was increased by improving seedling quality, enlarge the row spacing, transplanting feasible seedling number; under high nitrogen rate, rice yield and stability were promoted by improving seedling quality, enlarge the row spacing, transplanting feasible seedling number. The yield of Yanjing456 was 733.7 kg/667 m^2 in this experiment .