Research On Technology Mode Of Reenhouse Tomato Under Aeration Irrigation

Subsurface Drip Irrigation is a new irrigation technology that irrigation water by meansof the emitter capillary slowly seep into the nearby soil, and then with the help of gravity orcapillary effect spread to tomato root layer. Study of subsurface drip irrigation at home andabroad have focused on soil water movement, irrigation systems, water use efficiency，tomatoyield and quality，But research about effect of subsurface drip irrigation on soil respiration,soil ventilation and oxygen of tomato root zone on root growth, yield and tomato quality areso less. There are still many problems of combing aeration irrigation and drip technology inthe process of production.Therefore, how to combe aeration irrigation and the optimal emitterdepth and irrigation frequency to practical production is an tricky issue to be solved.This article studied in The Key Laboratory of Agricultural Soil and Water Engineering inArid Area of Ministry of Education,Northwest A﹠F University.The greenhouse experimentstudied the effects of tomato growth, yields and quality of greenhouse by different emitterdepth (10cm,15cm,20cm)、different irrigation volume（Kcp=0.8,Kcp=1.0,Kcp=1.2）anddifferent aeration irrigation frequence(one time3d,one time6d). For two years study the mainconclusion are as follow:（1）For the same irrigation frequency and same single tomato total irrigation watervolume (114.32mm)，tomato yields and quality are increased with aeration irrigation.Compared to the treatment of no aeration irrigation, plant height increased by1.44%，plantstem diameter increased by3.02%， yields increased by19.49%. A significantdifference.Aeration irrigation is beneficial to the growth of greenhouse tomato,Such as plantheight,stem diameter,yields and tomato quality. Emitter depth have little influence on tomatoplant height and stem diameter.But for plant growth,yields and tomato quality comparativelyspeaking,15cm emitter depth is more conducive to tomato growth, yields and quality.（2）Aeration irrigation treatment under the same condition of the emitter depth and totalirrigation water volume (114.32mm), the plant height, stem diameter, yield of tomato aregreater with irrigation frequency6d one time than3d one time,plant height increased by32.76%, stem diameter increased by5.87%, yields increased by13.76%. In the same condition of the aeration irrigation quality,the plant height,stem diameter,yields of tomatoare greater with irrigation frequency6d one time than3d one time,plant height increased by8.08%,stem diameter increased by6.33%, yields increased by26.01%.（3）For the same emitter depth and irrigation frequency,tomato growth,yield and qualityare increased with aeration irrigation treatment. Compared to the treatment of no aerationirrigation, plant height increased by36.54%, plant stem diameter increased by6.81%,yieldsincreased by44.96%.Tomato plant height,stem diameter and tomato yield,quality could bemodified by aeration irrigation. The irrigation water volume treatment of Kcp=1.0is optimalon plant growth, yields and water use efficiency of greenhouse tomato.To improve tomatogrowth,yield and quality.Comprehensive analysis,That12groups of processing in this research institute set up,Treatment T5(with15cm as the emitter depth, irrigation water volume Kcp=1.0, as onetime6d of aeration irrigation frequency) is best on growth, fruit yields and quality ofgreenhouse tomato. It is partly provides a certain technology reference for root zone irrigationmode’s selection of greenhouse tomato.This study suggest that aeration irrigation through thetomato root zone gas can effectively solve the problem of root zone hypoxia.Aerationirrigation growth,fruit yields and quality of tomato under aeration irrigation are obviouslybetter than the condition of no aeration irrigation. Indicate that aeration irrigation is a efficientmodel of water-saving irrigation.