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我县从1994年开始杂交水稻秋制至今已有10年,通过多年来的实践,制种单产从当初的每667平方米100千克左右,提高到近几年的每667平方米200～225千克。秋制种子占我公司年度种子销售量的40%以上。现将其主要技术经验总结如下。1合理安排亲本播种时间和播差期1.1根据我们多年来的天
Our county has been in the autumn of hybrid rice since 1994 for 10 years. Through years of practice, the yield per plant has increased from about 100 kg per 667 square meters to about 200 to 225 kilograms per 667 square meters in recent years . Autumn seeds accounted for more than 40% of my company’s annual seed sales. Now the main technical experience is summarized as follows. 1 Reasonable arrangements for the sowing time and sowing date 1.1 According to our days over the years