Effect of Drip Irrigation with Magnetised Water and Fertiliser on Cotton Nutrient Absorption

In order to improve the nutrient absorption effect of cotton in the process of simultaneous application of water and fertiliser, this paper studied the effect of injecting magnetised water and fertiliser on cotton nutrient absorption under the production conditions of drip irrigation. In the process of integrated water and fertiliser management of cotton, the study adopted the method of magnetisation treatment—After the water-fertiliser fusion liquid is magnetised by a magnetisation device, it is dripped on the cotton field through the drip irrigation pipe network. In this work, the water and fertiliser magnetisation device was designed, and it was combined with the drip irrigation pipe network as a test device. The nutrient absorption test of the water-fertiliser fusion liquid applied to cotton under different magnetic fields was conducted. The accumulation, absorption and distribution of cotton biomass and N, P and K elements were studied respectively. As a result of the research, we found that the magnetised water and fertiliser treatment can promote cotton nutrient absorption to varying degrees. A method of drip irrigation under a magnetised water and fertiliser film to improve the nutrient absorption effect of cotton was proposed.