连作早、晚稻如何经济合理施用氮素化肥,是我县长期以来悬而未决的问题,尤其是对拔节初期追施攻穗肥的重要性和必要性更是看法不一。几年来,我们就这方面问题进行了一些对比试验和大田生产实践。玉环县良种场1964年晚稻丰产试验田获得亩产864斤的大丰收,从中总结出早期施攻蘗肥(基肥和苗肥)、拔节初期施攻穗肥、减数分裂初期施保粒肥的“两攻一保”施肥法。随后,对此法进行了多次试验加以验证,各次的试验结果列为表1。 Even the early and late rice how to use nitrogenous fertilizer economically and reasonably is an issue that our county has long been unsettled, especially the importance and necessity of topdressing spike fertilizer in the early stage of jointing. In recent years, we conducted some comparative tests and field production practices on this issue. Yuhuan County thoroughbred field In 1964 late rice yield test field to obtain 864 kg per mu yield of bumper harvest, concluded that the early application of tillering fertilizer (basal and seedling fertilizer), early in the jointing attack spikelet, meiosis early grazing fertilizer “two Attack a security ”fertilization method. Subsequently, this method has been tested several times to verify the results of each test as shown in Table 1.