杂交水稻和常规品种对于栽培措施是有不同要求的。因为常规品种不存在杂种优势,杂交水稻则有强大的杂种优势。栽培杂交水稻时就要充分利用杂种优势,发挥增产潜力。由于二者有本质的不同,栽培时所采用的措施也就不同了。栽培杂交水稻,从育秧、移植、施肥到管理,都要有与之相适应的方法。关于育秧问题已经谈过(见本刊1977年第一期《杂交水稻育秧技术》),这里再谈谈以后各阶段的措施。 Hybrid rice and conventional varieties have different requirements for cultivation measures. Because conventional varieties do not have heterosis, hybrid rice has a strong heterosis. When hybrid rice is cultivated, it is necessary to make full use of heterosis and exert the potential of increasing yield. Due to the essential differences between the two, the measures taken during cultivation are also different. Hybrid rice cultivation, from the nursery, transplantation, fertilization to management, there must be a suitable method. The issue of raising seedlings has already been discussed (see our first issue of 1977, “Hybrid Rice Seedling Raising Techniques”), where we will discuss further measures at various stages.