一、引言地膜覆盖是一项甘蔗增产增糖增收的农业新技术,已有大量的试验报道证明了这一点。然而,有关地膜覆盖条件下施肥技术的研究报道却见得不多。在地膜覆盖条件下,甘蔗的生态环境产生了一系列的变化,特别是土壤环境,变化更大,诸如土温提高、保水保 I. INTRODUCTION Film mulching is a new agricultural technology for sugarcane production increase and sugar increase, which has been proved by a large number of experiments. However, there are few reports on fertilization techniques under plastic film mulching conditions. Under the conditions of mulching, the ecological environment of sugarcane produced a series of changes, especially the soil environment, with greater changes such as soil temperature increase, water conservation