Est On Ridge With Plastic Film Mulching-Furrow Irrigation Schedule And ISAREG Model Optimization Of Processing Tomato In Canal Irrigation District

This paper mainly discusses optimal ridge with plastic film mulching-furrow irrigation schedule of processing tomato in the Hetao irrigation District. In the test furrow is in two forms that is plastic film mulching and non plastic film mulching. And test site locates in Hongde agricultural professional cooperatives demonstration area of Shuanghe town in Linhe district. The thesis obtains the effect of soil moisture, water consumption, water consumption intensity, growth index, quality, yield and WUE under the condition of various irrigation schedule through the research of processing tomato. Using the ISAREG model to evaluate irrigation schedule of different planting forms and on the basis of that to optimize the irrigation schedule. The results are as follows:1、The soil moisture increased with the increasing irrigation water and water content in the furrow was approach to that ridge for the same treatment In0-20cm soil layer soil moisture were affected largely by precipitation and irrigation and obviously reflected the difference of irrigation volume. In60-80cm soil layer the water content was constantly steady and obviously varied only when the difference of irrigation volume was larger2、The water consumption and water consumption intensity of processing tomato during all period of the growth present a trendency of increase for first and then decrease.In flowering and fruiting stage water consumption and water consumption intensity was the largest value of all growth stage and water consumption intensity value was7.91mm/d.In ordinary hydrologic year(2013) WUE of plastic film mulching treatments are higher than non-plastic film mulching treatments and above20kg/m3,Ill is the best of all the plastic film mulching treatments and so is the CK of all the non-plastic film mulching treatments. And III is the best of all the treatments.3、Various irrigation volume affected growth index of processing tomato and the growth was the most vigorous in flowering and fruiting stage. Plant height can reach to56cm and stem diameter can reach to15mm. Exuberant flowering period of non plastic film mulching treatments prolonged5to6 days than plastic film mulching treatments. Fruiting stage prolonged about ten days than blooming stage.4、Various irrigation volume affected quality of processing tomato and lycopene of all treatments are above8mg/100g. Soluble solid and total acid content of plastic film mulching treatment I are the most and so is non-plastic film mulching treatment IV. Plastic film mulching treatment III is the biggest value of pH and so is CK of non-plastic film mulching treatment.5、Different weight of individual plant, horizon diameter, vertical diameter and percentage of the weight of single tomato forms various yields among treatments. In this study yield presents a trend of increasing with increasing irrigation quota for both plastic film mulching treatment and non-plastic film mulching treatment.6、Based on knowing of the ISAREG model,using model to simulate seven treatments of real irrigation schedule and analysis results that model outputs. In seven treatments Ⅱis the best irrigation system and recommended irrigation system in this study. On the basis of that designing and simulating five groups plastic film mulching-furrow irrigation schedule schemes obtains the optimal irrigation schedules of processing tomato both in planting form of plastic film mulching and non plastic film mulching and that is scheme2and...