农用残膜积累影响土壤和作物产量的研究

Study on Agricultural Residues Membrane Accumulation Effecting Soil and Crop Yield

目前,地膜的覆盖面积和使用量逐年增加,随着种植年限延长,地膜的残留量也逐年加大。由于过量使用地膜,致使大量废旧农膜不能及时回收,存留的农用膜破坏土壤的物理和化学结构,可抑制土壤微生物的生长,最终影响作物发芽出苗,导致作物减产的产量和质量,使农民的收入受到极大损害。探寻揭示残膜长期积累对农作物产量的影响程度,进而研究确定残膜回收的对策,对促进覆膜保墒集雨补灌旱作节水农业技术的普及应用和宁夏中南部地区社会、经济和生态和谐发展等具有重要意义。

The membrane area covered and usage increased year by year, with the increasing years of planting, the residues of mulch also increased year by year. Due to the excessive of using mulch, a large number of discarded mulching films can＇t timely recovery, agricultural membrane damaged the soil physical and chemical structure, restrained the growth of the soil microorganisms, eventually lead to the non-sprout and emergence, crop failure affected the production and quality of agricultural products and farmers＇ income. This paper revealed the influence degree of the residual film long-term accu- mulation on crop yield, studied to determine the residual film recycling countermeasure, had great significance on promot- ing the popularize and apply of rectorial membrane water retention rainwater harvesting irrigation rainfed water-saving a- gricultural technology and the harmonious development of social economy ecology in central and southern regions.