Effects Of Light Control And Irrigation On Growth And Water Consumption Of Drip Irrigation Maize

Object:In order to study the effect of different light control and irrigation on the growth characteristics,physiological characteristics,soil water temperature changes and corn water consumption law of drip irrigation;different light control and irrigation amount on the physiological growth characteristics of drip irrigation and the water consumption law to adjust the light too strong light inhibition on corn growth.With a view to high-efficiency water-saving irrigation,it provides a theoretical basis for improving the coordinated regulation of light control and irrigation on corn growth and water consumption,and provides a reference for the development of modern agriculture.It provides a theoretical basis for studying the meteorological factors and the cooperative regulation of drip irrigation on corn under drip irrigation,which is of great significance for modern agricultural science to plant corn and guide production practice.In order to study the effect of different light control and irrigation on the growth characteristics,physiological characteristics,soil water temperature changes and corn water consumption law of drip irrigation,different light control and irrigation amount on the physiological growth characteristics of drip irrigation and the water consumption law,to adjust the light too strong light inhibition on corn growth.With a view to high-efficiency water-saving irrigation,it provides a theoretical basis for improving the coordinated regulation of light control and irrigation on corn growth and water consumption,and provides a reference for the development of modern agriculture.It provides a theoretical basis for studying the meteorological factors and the cooperative regulation of drip irrigation on corn under drip irrigation,which is of great significance for modern agricultural science to plant corn and guide production practice.Methods:In this experiment,three-factor field trials with different irrigation amounts,different light control rates,and different periods of shading were set up.The irrigation amounts were set to 3000,3750,4500,and 5250 m~3/hm~2 respectively denoted as(W1,W2,W3 and W4)the different light control is set to normal light treatment as a control CK,mild shading L1(20%shading rate),moderate shading L2(50%shading rate)and heavy shading L3(70%Shading rate),the light control period is set to F1(May 1 to September 10)during the full growth period,F2(July 15 to August 1)and grouting to maturity Period F3(August 1st to September 10th).A total of 22 treatments were repeated 3 times for each treatment.Results:(1)The soil temperature difference between the treatments under different irrigation conditions was significant(P<0.05).The average temperature difference of the soil from 0-60 cm depth in W1L1,W2L1,W3L1,and W4L1 treatment was about 0.6?,and the soil depth was from 0-30 cm.The soil temperature responds significantly to the air temperature.The soil temperature at a depth of 10 cm has the largest daily variation,which can reach a maximum of about 4.8?.(2)The soil temperature of different light control treatments was significantly lower than that of normal light treatment.The W2L1,W2L2,and W2L3 treatments had an average temperature of 1.8-2.9?lower than the W2LCK treatment at 0-60 cm depth.The average temperature difference at a depth of cm is about 0.6?,the daily variation in the depth of 10 cm treated by W2L1,W2L2,and W2L3 is smaller than that in the W2LCK treatment,and the effect of temperature is significantly reduced.The daily change of soil temperature in the depth of 20-30 cm is relatively gentle,the soil temperature at different depths of45-60 cm under different light control and irrigation treatments did not respond significantly to air temperature,and basically stabilized.Under different light control and irrigation conditions,the changes in soil temperature have a lag,and the changes in soil temperature with the increase of soil depth also show a lagging reflection.Under different irrigation conditions,the soil temperature changes by 10 cm per soil layer depth.The lag is about 2 h,and the lag is about 1 h every 10 cm under different light control conditions.(3)The chlorophyll relative content of corn leaves responded significantly under light control.After light control,the SPAD value of chlorophyll relative content in corn leaves increased significantly,the chlorophyll fluorescence parameters?PSII,Fv/Fm,and qP all increased,NPQ decreased,and with the light control The physiological characteristics of corn under drip irrigation increased more and more.The physiological indexes of various treatments gradually returned to normal light levels after normal light was restored.(4)The change of water consumption law during the whole growth period of drip irrigation corn is as follows:the water consumption of drip irrigation corn reaches a high level during jointing and tasseling,and the water consumption of drip irrigation corn reaches a lower level during seedling and mature periods.The change of water consumption during the growing period was as follows,tasseling stage>jointing stage>filling stage>seedling stage>maturity stage.The change of water consumption of corn under drip irrigation increased with the increase of irrigation water,and decreased with the increase of light control.Under different irrigation conditions,the water consumption of L1 light control treatment was reduced by21.59-42.45mm compared to normal light treatment,and the water consumption of L2 light control treatment was reduced by 39.64-64.16 mm compared to normal light treatment.The water consumption of L2 light control treatment is reduced by 58.99-89.00 mm compared with normal light treatment.(5)The accumulation and distribution of dry matter and yield and composition of corn under drip irrigation under different light control conditions were reduced to varying degrees.After light control during the whole growth period,the plant height,stem diameter,leaf area and yield of corn under drip irrigation were significantly reduced.The effects of light control at the silking stage and maturation stage on the male and female ears of drip irrigation were significant,but the plant height,stem thickness and leaf area of drip irrigation were not significantly affected.Light control at different growth stages has an impact on the growth process of drip irrigation corn.Compared with normal light conditions,light control treatment during the whole growth period and light control during the spinning stage delayed the growth process of drip irrigation corn.Advances in the growth of drip irrigation corn.Conclusion:Light control has a significant effect on corn yield.The yield of corn under drip irrigation is significantly reduced after light control.The light control has the most significant effect on corn yield during the silking stage.The amount of irrigation can promote the growth and water consumption of drip irrigation corn.Light control can be effective Reduce water consumption for drip irrigation corn.Through the synergistic effect of different light control and irrigation on drip irrigation corn in this study,it can provide reasonable light intensity and irrigation volume for field corn under sufficient sunlight in Xinjiang,and provide reference value for precise irrigation and elaborate irrigation system.