Study On Water Consumption And Irrigation Schedule In An Intercropping Field Under Mulched Drip Irrigation

This article focused on the issue of water consumption regularity intercropping farmland under Drip Irrigation in Hetao Irrigation district. The combination of drip irrigation under mulch and intercropping, crop growth targets, water and heat the space under the multi-technology coupling variation, crop water consumption regularity and proposed film drip irrigation and intercropping patterns combined with efficient water-saving under conditions suitable for irrigation system in the area, water-saving irrigation in the region, high income to provide theoretical and technical basis. The experiment was launched in Hetao irrigation district Dengkou agricultural water-saving demonstration zone during 2014-2013 year, has achieved the following results:(1)The Intercropping field under mulched drip irrigation between different water conditions and different cropping patterns, plant height, leaf area index, stem diameter, dry matter accumulation volume differences, the overall performance of the average under intercropping maize better than single modes; and tomatoes as thermophilic, hi light crops, wide rows (4-2) intercropping patterns and indicators closer to a single, narrow rows (2-2) intercropping indicators better than a single of model.(2) The Intercropping field under mulched drip irrigation, and soil moisture content within the overall performance of the whole growth period for:Film Tomato> Corn> Middle. But in terms of the coefficient of variation.2-2 intercropping patterns and 4-2 intercropping pattern is slightly different:2-2 intercropping patterns in 0-20cm depth of soil moisture variation coefficient greater; and 4-2 intercropping patterns in 40-60cm depth of soil moisture variation coefficient is maximized.(3)The crop coefficient Kc is estimated under intercropping and mulched drip irrigation field. The use of a single crop coefficient approach, the FAO crop coefficient for a given reference values of meteorological data, irrigation methods, field management in the form of amendments to draw a comprehensive theory of the crop coefficient, and then get the crop coefficient under intercropping measured by the water balance method, the two After analysis of variance showed no significant difference between the two. therefore. the Kc estimated by FAO to the test area of more accurate crop.(4) According to the status test area combined results of the evaluation of the existing irrigation system, using WIN ISAREG model for intercropping patterns irrigation system was evaluated and optimized on the basis of the evaluation results. And then combined with the test area soil moisture conditions and other factors considered, simulation and optimization options from six programs through irrigation system, to get the preferred results and verify its feasibility.