几年来,我省水稻“倒种春”种植面积逐年扩大。但是部分山区,由于秧龄掌握不当,造成早穗或抽穗困难而减产。因此,掌握适当秧龄是保证“倒种春”增产的重要问题。一九七一年我们在上杭县古田公社溪背大队,与当地贫下中农在一起,进行了“倒种春”秧龄试验,结果如下:一、试验方法 Over the past few years, our province rice “inverted spring ” planting area expanded year by year. However, in some mountainous areas, production was reduced due to improper mastery of seedling age, resulting in difficulties in early heading or heading. Therefore, to grasp the appropriate seedling age is to ensure “inverted spring ” an important issue to increase production. In 1971, we carried out a “seedling age trial” in the “Beiji Spring” seedling age trial at the Xiguan Brigade of Gutian Commune in Shanghang County together with the poor and middle-level peasants in the local area. The results are as follows: I. Test Methods