我所自建所以来,曾先后对甘蔗的施肥问题进行了22项试验,初步积累了一些经验,有些试验结果在生产实践中证明是行之有效的。为了适应当前甘蔗生产发展的需要,特把这些资料摘要汇集于后,以供参考。一、甘蔗的需肥特性甘蔗植株高大,生长期长,需肥期也长,因而需肥量就较多。如早期养分不足,后期肥料过多,则蔗茎上粗下细,容易风折倒伏。反之,如肥料集中施在前期,后期养份不足,又会形成“老鼠尾巴”,产量降低。因此,必须注意分次施肥,合理用肥。(一)甘蔗对肥料三要素的吸收量尽管甘蔗生长过程中需要的元素多种多样,但主要的是氮、磷、钾三要素。氮素增大叶面积、茎长和茎粗,促进分蘖增 Since my establishment, I have carried out 22 tests on the fertilization of sugarcane and accumulated some initial experiences. Some of the test results proved to be effective in the production practice. In order to meet the needs of the current development of sugarcane production, especially after the collection of these information summarized for reference. First, the sugar needs of sugarcane sugarcane plant tall, long growth period, need fertilizer is also long, and therefore need more fertilizer. Such as lack of early nutrients, post-fertilizer too much, then the cane stem fine, easy to wind lodging. Conversely, if the fertilizer is concentrated in the early, late lack of nutrients, will form a “mouse tail”, reduce production. Therefore, we must pay attention to graded fertilization, rational use of fertilizer. (A) sugar cane three elements of fertilizer absorption Although sugar cane growth process requires a variety of elements, but the main is nitrogen, phosphorus and potassium three elements. Nitrogen increased leaf area, stem length and stem diameter, and promoted tillering