Effects Of Drip Irrigation Under Plastic Mulch On Growth And Yield Of Maize

The effects of drip irrigation under plastic mulch on the growth and development,chlorophyll fluorescence parameters and yield of maize were studied by the experiment on drip irrigation of maize under plastic mulch.In this study,maize variety Jidan 631 was used as test material,2 test treatments were set up,namely drip irrigation under mulch(S treatment),drip irrigation treatment(C treatment)and contrast treatment(CK treatment).With the study on the effects of drip irrigation under plastic mulch treatment and the drip irrigation treatment on dry matter accumulation,leaf area index,chlorophyll fluorescence parameters,grain filling rate and yield of maize,so as to study the effects of drip irrigation under plastic mulch on the growth and yield of maize and so on.The result shows:1.Drip irrigation under plastic mulch treatment can increase the plant height of maize.Both drip irrigation under plastic mulch treatment and the drip irrigation treatment can increase the plant height of maize and reduce the ear height of maize.But the difference between the two treatments was not significant.2.Drip irrigation under plastic mulch treatment can increase the leaf area index of maize.Under the conditions of drip irrigation under plastic mulch and drip irrigation,the leaf area index of maize showed the trend of increasing first and then decreasing,and the leaf area index under mulch drip irrigation was the biggest in the whole growth period of maize.3.Drip irrigation under plastic mulch treatment can increase the dry matter accumulation of maize.Both drip irrigation under plastic mulch treatment and the drip irrigation treatment can increase the dry matter accumulation per plant at different growth stages,and all treatments showed an increasing trend,but the amount of dry matter accumulation under drip irrigation under plastic mulch treatment was higher than that of drip irrigation and contrast treatment at the whole growth stage.And the maize in the tassel period mainly increased the dry matter quality of the vegetative organs,and the ratio of the dry matter mass of the reproductive organs to the dry matter weight of the individual plants increased after the tasseling period.4.The basal fluorescence(Fo)and maximum fluorescence(Fm)both showed the trend of increasing first and then decreasing when drip irrigation under plastic mulch treatment and the drip irrigation treatment during the whole growth period of maize,but the photochemical efficiency(Fv/Fm)changed little.5.The drip irrigation under plastic mulch can increase the grain filling rate of maize.The grain filling rate of each treatment increased from day 7 to day 35 after pollination,and the maximum rate of grain filling rate was day 28 to day 42 after pollination.As the rate of descending was significantly accelerated after 42 days of pollination under contrast treatment,while drip irrigation under plastic mulch treatment and the drip irrigation treatment filling rate decreased slowly.6.Both drip irrigation under plastic mulch treatment and the drip irrigation treatment can increase ear rows and 100 grain weight of maize,but the grain number of drip irrigation treatment was lower than that of contrast treatment and drip irrigation under plastic mulch treatment.Finally,drip irrigation under plastic mulch treatment can increase maize yieldThe dry matter accumulation and leaf area index of maize on the ground under the condition of drip irrigation under plastic mulch were significantly increased.The drip irrigation under plastic mulch treatment has a high leaf area index,which can prolong the leaf duration.The drip irrigation under plastic mulch treatment can effectively increase the chlorophyll fluorescence parameters.And can increase the grain filling rate of corn,and finally increase the yield.