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为研究不同类型地膜覆盖在河套灌区农业生产中的适用性,同时筛选出适宜灌区玉米种植的地膜覆盖类型。试验设置普通地膜、生物地膜、液态地膜和不覆膜4个处理,研究了不同覆盖处理对玉米出苗率、生长状况、产量及水分利用效率的影响。结果表明:生物地膜覆盖条件下各指标与普通地膜覆盖差异性不显著(P>0.05),但出苗率平均较液态地膜和不覆膜处理高7.65%和8.24%,差异性达到显著或极显著水平。生物地膜覆盖玉米地上部干物质累积量、株高和叶面积指数均显著高于液态地膜和不覆膜处理(P<0.05),且在玉米生育前、中期差异性更为显著。生物地膜覆盖玉米产量平均较液态地膜和不覆膜处理高12.63%和14.69%,水分利用效率高13.55%和20.47%,差异性显著(P<0.05)。综合分析,河套灌区春玉米种植适宜采用生物地膜覆盖的方式。
In order to study the applicability of different types of plastic film mulching in agricultural production in Hetao Irrigation District, the types of plastic mulching suitable for maize planting in irrigated area were also screened out. The effects of different covering treatments on the germination rate, growth status, yield and water use efficiency of maize were studied by setting four treatments, ie ordinary film, bio-film, liquid film and no film. The results showed that there was no significant difference (P> 0.05) between the indexes of mulching and normal mulching, but the germination rate was 7.65% and 8.24% higher than that of the liquid mulching and non-mulching treatments, and the difference was significant or extremely significant Level. The dry matter accumulation, plant height and leaf area index of above-ground parts covered with bio-film mulching were significantly higher than those of liquid mulching and non-mulching (P <0.05), and the differences were more significant before and during maize growth. Biomass mulching corn yield was 12.63% and 14.69% higher than that of liquid mulching and non-mulching treatment, respectively, and its water use efficiency was 13.55% and 20.47%, respectively. The difference was significant (P <0.05). Comprehensive analysis, Hetao irrigation area suitable for planting spring maize biofilm coverage.