摘要
为了探究不同残膜量对河套灌区春玉米株高、叶面积、产量及土壤水分的影响,试验共设置4个残膜量处理,分别为0kg/hm2（CK）、67.5kg/hm2（A）、135kg/hm2（B）和270kg/hm2（C）。结果表明：随残膜量增加,对玉米生育前期的株高、叶面积指数影响显著,而生育后期相对较弱,但均显著低于处理CK（P〈0.05）;残膜量与玉米产量呈现极显著负相关（r=-0.987）,处理CK分别较A、B、C产量高2.4%、11.84%和23.77%;残膜主要影响0~40cm土层含水率变化,且各处理生育前期差异显著（P〈0.05）,而后期差异较小。研究结果可为灌区预测多年后残留地膜对作物生长和土壤状况的影响以及防治残膜污染提供理论依据。
In order to study the effects of different residual film amount on spring maize plant height,leaf area index,yield and soil moisture in Hetao Irrigation District.In the study,the experiments with four treatments,including 0kg/hm2（CK）,67.5kg/hm2（A）,135kg/hm2（B）and 270kg/hm2（C）,and three-time repetition are carried out.The results show that with the increase of residual film amount,the influences on the plant height and leaf area index are significant in the early stage,while relatively weak at the late growth stage,but all obviously lower than CK（P0.05）.The residual film amount is significantly negatively correlated with the yield of maize（r=-0.987）,the maize yield of CK is higher than that of A,B and C by 2.4%,11.84% and 23.77%;The Residual film mainly affects the change of soil moisture in 0~40cm,and there are significant differences between four treatments at the early stage（P0.05）,but no significant differences during the late growth period.The results can provide theoretical basis for the prevention and treatment of residual film pollution,and predicting the several year＇s later effects of residual film on crop growth and soil condition in Hetao Irrigation District.
出处
《节水灌溉》
北大核心
2016年第4期47-49,共3页
Water Saving Irrigation
基金
国家重大科技专项(08-Y30B07-9001-13/15-01)
内蒙古自治区高等学校创新团队发展计划(NMGIRT-B1611)
内蒙古教育厅自然科学基金项目(njzy263)
关键词
残膜
株高
叶面积指数
产量
土壤水分
玉米
residual film
plant height
leaf area index
yield
soil moisture
maize
