【摘要】 <正> 我区双季稻面积已达水田的96.5%,在粮食生产中居主导地位.要使粮食产量进一步提高,增加单产是我们的主攻方向,而合理施肥则是提高单产的一项重要措施。因此,结合本地区具体情况,研究双季稻高产稳产的肥料主体结构和肥料合理施用技术,这对明确肥料发展方向,充分利用资源,以维持双季稻区生态系统的养分平衡,达到高产低成本的要求,使施肥措施逐步规范化是有所裨益的。现就我们在这方面进行的一些试验研究结果综合整理如下。更多还原

【Abstract】 A fertilizer-applicating scheme was worked out through the research on the formation and reasonable application of fertilizers for high and stable yield in double-cropping rice, in order to resolve the problems of unreasonable fertilizer application in the production of double-cropping early-and late-rice. In the scheme, the following measures are recommened: (1) the formulae of the combination among different kinds of fertilizers, such as organic manure and chemical fertilizer, fine and coarse components in organic manure, and nitrogenic and phosphatic and/or potassio components in chemical fertilizers are adopted according to the sources of fertilizers in our district and the properties of the various kings of fertilizers; (2) the targets at both high and low limits for the amount of fertilizers applied are determined on the basis of the fertilities of various kinds of soils and the yield-increasing potentialities of different varieties of doublecropping early-and late-rice; and (3) the ratio of basal-to top-dressing fertilizers and the frequency and time for dressing should be in accordance with the characteristics of the demand for fertilizer by rice plants and the climatic conditions during different growth stages of double-cropping early-and late-rice. As a result of this, the irrationality in fertilization is avoided.It was shown by multipoint trials that higher yield can be obtained under the guidance of this scheme, which exhibits fairly wide adaptability in regions of double-cropping rice and is capable of bring about a gradual normalization of fertilizer application.更多还原