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我区连作杂交晚稻,在1980年已占晚稻总面积的53.3%,但因早稻迟熟品种面积大(占77.6%),所以60.8%杂交晚稻要推迟到8月1日以后插种.为了解决晚稻长秧龄迟栽和高产的矛盾,我们一直采取小苗或中苗摆寄的两段育秧.但两年的观察表明,中小苗摆寄对50天以上秧龄、8月初迟栽的杂交稻达不到预期的增产效果.因为寄秧期间秧龄长,秧田郁闭,脚叶发黄,分蘖死亡,秧根老化,移栽之后发根慢,易败苗.但是在有些生产队由于安排不当,推迟了摆苗时间,结果迟插后反而增了产,这对我们是很好的启发.因此,在1980年进行了不同秧龄摆寄的育秧方式试验,以寻求杂交晚稻在长秧龄迟栽条件下的最佳育秧方式.
The continuous cropping hybrid late rice in our area accounted for 53.3% of the total area of late rice in 1980, but due to the large area of late maturing rice varieties (accounting for 77.6%), the 60.8% hybrid late rice should be postponed until August 1 after planting. Late rice long-seedling late and high-yielding contradictions, we have been taken to seedlings or seedlings placed two sections of seedlings, but two years of observation showed that medium and small seedlings placed on more than 50 days of seedling age, early August early hybrid rice up to To the expected yield increase.Because the long seedling age during seedling transplanting, seedling closed, leaf yellow, tiller death, seedling aging, transplanting slow root hair, easy to seedlings.But in some production teams due to improper arrangements, postponed The time to put the pendulum seedlings, the results later increased after the adulteration of production, which is very good inspiration for us.Therefore, carried out in 1980 different seedling age seedling feeding test to seek late hybrid rice in the late seedling age The best way to grow seedlings.