Wheat-Maize Anniversary In Yuncheng District Technical Research Of Water And Fertilizer

Wheat and Maize are the main food crops in our country.Currently,the critical issue that the main producing area of our province faces is that unreasonable nitrogen application rate and irrigation increases agricultural cost,while decrease agricultural economic benefit.This assay is going to compare CMWF,micro spray fertigation and traditional flooding pattern.Research result as below:1 The increase of irrigation volume is good to the accumulation of crops above-ground biomass and the increase of grain yield,but makes the decrease of harvest index.The various disposal harvest index of Micro spray fertigation is higher than flooding pattern,and the former is in favor of the increase of harvest index.The CMWF pattern has no obvious advantage in the accumulation of crops dry matter accumulation,but its yield and harvest index are higher than flooding pattern and full irrigating fertigation.2 In the aspect of soil water content,CMWF pattern can keep a higher level in wheat/Maize postulation period and harvest time,which helps the increase of grain yield and is clearly better than other ways.Comparing CMWF and CK,anniversary irrigation volume has decreased by 24.81%,water use efficiency has increased by 33.52%and production efficiency of irrigation water has increased by 58.28%.3.Fertigation pattern can evidently improve N agronomy efficiency.Anniversary nitrogen application rate of CMWF pattern has decreased by 30.46%than CK flooding irrigation.In the growing season of wheat and maize,N agronomy efficiency has increased by 39.05%and 53.31%respectively.4.The input of nitrogen fertilizer of CMWF pattern has decreased by 30.5%than the traditional flooding irrigation.Also,irrigation water has decreased by 40.8%and human input has decreased by 66.7%.The income has increased by 16.4%not counting the input of irrigation facility.Meanwhile,Fertigation of decrement irrigation treats W2N2 showed higher economic benefit,only second to CMWF.When the condition of measuring moisture in the soil cannot be met,it can be a reference of local wheat/maize anniversary fertilization micro spray irrigation system.