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由于杂交粳稻的米质优良,加上单产比常规水稻增产一成以上,推广过程中受到农户的欢迎,种植面积得到不断扩大。杂交粳稻的制种产量,经过十多年来的制种高产栽培技术的摸索,已从产种量35kg 提高到现在150kg左右,高产田块达到250kg 以上,但是杂交粳稻的推广面积,至今还未超过全市种植总面积的20%,综其原因,制种质量的不稳定,是制约进一步发展杂交粳稻制种和生产的因素之一,下面就根据金山十多年来制种的经验教训,围绕提高杂交粳种制种质量的几个技术问题,讨论如下。
Because the quality of japonica hybrid rice is good, and yield per plant is more than that of conventional rice by more than 10%, it is welcomed by farmers and the planting area is constantly expanding. After more than a decade of seed production and cultivation techniques, the yield of hybrid japonica rice has been increased from 35kg to about 150kg now, and over 250kg for high-yield plots, but the popularized area of japonica hybrid rice has not yet been reached More than 20% of the total area planted in the city. The reasons for this and the unstable quality of seed production are one of the factors restricting the seed production and production of hybrid japonica rice. Based on the experiences and lessons learned from Jinshan over the past decade, Improve the quality of hybrid japonica seed production of several technical issues are discussed below.