Effects of biological-organic fertilizer on nutrient loss in different texture soils of cantaloupe

YANG Keming; LIU Guohong; Huxidan·Maimaiti; Rexidan·Amuti; LI Haifeng; MA Xingwang; LIU Zhigang

doi:10.16861/j.cnki.zggc.2024.0671

Abstract：Cantaloupe must ensure sufficient water supply during their growth process in order to develop normally.How-ever,in actual production,excessive water supply often leads to deep leakage,which not only wastes resources but also pollutes groundwater.To understand the effects of applying biological-organic fertilizer(BOF)on alleviating nutrient loss caused by irrigation in soils with different textures,soluble BOF was applied to potted cantaloupe soils with textures of loam(S1),sand(S2),and clay(S3)during irrigation.The dry matter mass and nitrogen,phosphorus,and potassium con-tent of plants and fruits after maturity were measured,as well as the physicochemical properties and nitrogen,phosphorus,and potassium content of soil,nitrogen,phosphorus,and potassium content in leachate,and the content of different nitro-gen forms.The results showed that compared with no application of biofertilizer(CK),BOF treatment significantly re-duced the soil pH,total nitrogen,NO3--N,total phosphorus,and total potassium content of S1,S2,and S3;significantly re-duced soil conductivity,soil available potassium,soil available phosphorus,soil total nitrogen,soil NO3--N,and canta-loupe fruit potassium content in S1 and S2;significantly increased the soil NH4+-N content of S1,S2 and S3;significantly increased the soil conductivity,soil available phosphorus,soil total nitrogen,soil NH4+-N,soil NO3--N,cantaloupe plant ni-trogen,phosphorus,and potassium content,cantaloupe fruit nitrogen and phosphorus content,and cantaloupe total nitro-gen,phosphorus,and potassium content in S3.Therefore,the application of BOF can not only improve soil pH and soil conductivity,alleviate irrigation induced leakage of total nitrogen,NO3--N,total phosphorus,and total potassium in the soil;and it can also play a role in improving the dry matter mass of sweet melon,soil nutrient content,and reducing soil nutrient leaching.