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“种”是农业八字宪法中的前提。如果只有优良的栽培技术而缺乏相应的优良品种,要达到充分利用营养条件,创造高额丰产仍然是有困难的。因此,选育丰产、优质、早熟、抗病、抗倒的水稻新品种,是当前急需完成的任务。杂交育种是水稻育种的重要途径之一。应用杂交的方法,可以动摇作物的遗传性,结合亲本的优良性状和特性,提高后代的生活力。通过杂交创造新品种的成功事例很多,象“莲塘早”、“399”、“熊交
“Species” is a precondition in the eight-character constitution of agriculture. If only good cultivation techniques and the lack of corresponding good varieties, to achieve full use of nutritional conditions, to create high yield is still difficult. Therefore, breeding new varieties of rice with high yield, high quality, precocity, disease resistance and lodging resistance is an urgent task that needs to be completed urgently. Hybrid breeding is one of the important ways of rice breeding. Application of hybrid methods, can shake the heredity of crops, combined with the excellent traits and characteristics of the parents to improve the viability of future generations. There are many successful examples of creating new breeds through crossbreeds, such as “Liantang early”, “399”, "bear exchange