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为了比较玉米不同种植模式的实施效果,采用单因素随机区组田间试验设计,设置了3种不同种植模式:宽行双株、宽窄行双株和常规种植(CK),并对3种不同种植模式下玉米叶片净光合速率、叶绿素含量、产量、效益等方面进行了分析。结果表明,宽行双株种植模式连续2 a在整个生育期平均净光合速率均最高;叶绿素含量与叶片净光合速率保持一致;2 a平均产量分别较宽窄行双株和对照高15.38%和23.11%;产出投入比最高,为3.66,效益显著。因此,宽行双株为最优种植模式,可为今后山西省种植玉米选择种植模式提供理论依据。
In order to compare the effects of different planting modes of maize, three different planting modes were set up in the single-factor randomized field experiment design: double row wide plants, double row wide and narrow row plants and conventional planting (CK), and three different planting Mode of net photosynthetic rate of maize leaves, chlorophyll content, yield, benefits and other aspects were analyzed. The results showed that the average net photosynthetic rate (Pn) of the two-plant-wide plantation model for two consecutive years was the highest during the whole growth period; the chlorophyll content was consistent with the net photosynthetic rate of leaves; the average yield of two years was 15.38% and 23.11 %; The highest ratio of output to investment, 3.66, significant benefit. Therefore, the wide line double strain is the optimal planting mode, which can provide the theoretical basis for selecting planting mode of planting corn in Shanxi Province in the future.