摘要
为研究地膜再利用对向日葵田土壤过氧化氢酶活性的影响,进行了旧膜、新膜及露地栽培向日葵对比试验。结果表明,地膜再利用可提高土壤过氧化氢酶的活性。在0~40cm土层,旧膜的土壤过氧化氢酶活性较露地显著增加4.2%,较新膜增加2.6%。土壤过氧化氢酶活性随生育期变化而不同,呈平稳-下降-上升的变化趋势。旧膜覆盖可以维持耕作层（0~20cm）过氧化氢酶活性的较高水平及其稳定性,而下层呈快速下降的趋势,但各层土壤过氧化氢酶活性均表现为：旧膜〉新膜〉露地。可见,地膜覆盖尤其是地膜再利用覆盖由于改善了农田生态微环境,从而提高了土壤微生物活动和土壤过氧化氢酶活性。
Aiming at reducing agricultural pollution caused by plastic film,the effects of re-used plastic film mulching on soi1 catalase activity were studied through comparing with the plastic film and open field in Hetao region. The results showed： Soil catalase activity of re-used film mulching increased at different degree. Compared with bare field and new film mulching,soil catalase activity in 0-40 cm of re-used film were higher significantly 4. 2% and 2. 6% respectively. Growth stage changes of soil invertase catalase activity are different. Soi1 catalase activity was fluctuating decline effecting by irrigation,and with a minimum in squaring. Vertical changes of the soil catalase activity are reduced with increasing soil depth,but more stable activity in plough layer（ 0-20cm）. So the findings indicated re-used film could also enhance soil catalase activity though improved farmland ecological microenvironment.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
2015年第5期17-20,共4页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
包头市青年创新人才项目"地膜再利用对土壤酶活性的影响"
农作物新品种及配套栽培技术"地膜二次利用免耕直播杂交向日葵栽培技术推广"(20101110)
农业部"土壤有机质提升试点补贴--免耕栽培技术推广"项目
关键词
地膜再利用
向日葵
土壤过氧化氢酶活性
Re-used plastic film mulching
sunflower
soil catalase activity
