论文部分内容阅读
自1982年地膜覆盖栽培技术大面积推广以来,在蔬菜生产上的应用面积逐年扩大,而且收到了显著的增高地温、保持水分、提高肥效、增强土壤通透性,进而促进蔬菜早熟、增产增收的效果。但是,从多年大面积生产实践看,尚存在一些问题,大大影响了这项新技术应有效益的发挥。一、关于地膜覆盖作业质量的问题蔬菜地膜覆盖栽培,不是在一般露地蔬菜栽培的基础上简单地覆盖一层薄膜,而
Since the large-scale popularization of plastic film mulching cultivation technology in 1982, the area of application in vegetable production has been expanding year by year. In addition, significant increase in ground temperature, water retention, fertilizer efficiency and soil permeability have been achieved. effect. However, judging from many years of large-scale production practices, some problems still exist that have greatly affected the effective development of this new technology. First, the quality of the operation of the plastic mulching Mulch coverage of vegetables, not in general open-field vegetable cultivation based on simply covering a thin film, and