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近年我省四优二号作晚季种植面积的扩大,需留用晚秧地面积也随之增加,与双季早稻的发展发生了直接的矛盾.特别在地少人多的地区,更是一个急待解决的矛盾.为了解决这一问题,一九七六年、一九七七年晚季我们在所内进行了四优二号播插期试验,采用早熟早稻早收的田地培育湿润短秧插植,得到了安全齐穗,且产量与专留晚秧地培育的湿润长秧插植的相近似.为了进一步总结出经验,为节省晚秧地有利于双早面积的扩大,一九七八年我们又专门进行了四优二号秧种试验.
In recent years, our province Siyou 2 for the late season to expand the planting area, need to stay with the area of late seedling also increased, with the development of double crop early rice had a direct conflict, especially in areas with fewer populations, but also a In order to solve this problem, we carried out the Sijiu No.2 sowing date experiment in 1976 and the late 1977, and cultivated wet short-seedlings Planting, get a safe and full heading, and yield and special reserved late seedling cultivation of wet long seedling planting similar.In order to further sum up experience, in order to save late seedling is conducive to the expansion of double early area, one seven Eight years we have also conducted a special four seed number two seed trials.