近年来我省杂交水稻的栽培面积发展很快,尤以我省粤北地区栽培面积最大,对促进我省粮食增产起了积极的作用。因此,研究杂交稻与常规稻在吸收氮素营养方面的共同性及其特殊性,以及氮肥的合理施用,这是杂交稻 In recent years, the cultivated area of ​​hybrid rice in our province has developed rapidly, especially in northern Guangdong, which has the largest cultivation area and played an active role in promoting grain production in our province. Therefore, the hybrid rice and conventional rice in the absorption of nitrogen nutrition commonality and its specificity, and the rational use of nitrogen fertilizers, which is hybrid rice