Study Of Irrigation Technology On Water And Fertilizer Control

Due to the monsoon climate,the spatial and temporal distribution of water resources in China is not uniform,and the utilization of water resources is very difficult.At the same time,China is a big agricultural country with agricultural water consumption accounting for more than two thirds of the total water consumption in China.In arid and semi arid areas,Agricultural water supply situation is particularly severe,can be used for irrigation water will not increase significantly;At the same time,excessive fertilization caused by soil and water pollution and soil compaction and other issues have intensified and seriously hindered the development of agriculture.Therefore,the development of water-saving irrigation technology and water and fertilizer integration technology is an important measure of sustainable development of water resources in China,is to achieve regional food production sustainable and stable yield of the inevitable choice.Based on the current situation and existing problems of domestic and foreign research,this paper,based on the crop in-depth irrigation system model and the water and fertilizer integrated fertilization system model,carries out water-saving irrigation and water and fertilizer integration for different water treatment and different fertilization methods of summer maize Experimental study.The main research results are as follows:1.Experimental study on corn planting.According to the data of production and growth status under the condition of deficient irrigation,effects on production,water production efficiency and economic benefit are explored2.Model of fuzzy synthetic evolution.The improved analytic hierarchy process is used to caloutate the weight of each fador and than fuzzy synthetic evolution model is construed3.Application of model,according to the date analysis of corn planted in year of 2015 and2016 evaluated by the model conclude that the irrigation limit is 70 percent of field water holding mate.4.Application of Multi-level fuzzy according to the dates analysis of corns planted in the year of 2016 and evaluate First-level Fuzzy on production and evaluated Multi-level Fuzzy on irrigation scheme.We conclude bay that the irrigation limit is 70 percent of field water-holding rate and fertilization scheme is 90 percent.