Penelitian ini bertujuan untuk mengukur pengaruh perlakuan terhadap besarnya pelindian nh4 + dan no3 - di tanah sulfat masam yang diberi pupuk kandang ayam + biochar dan tanaman padi. penelitian ini dilaksanakan di rumah kaca dengan menggunakan rancangan acak kelompok (rak) faktor tunggal dengan kombinasi perlakuan, diaman ada tanah saja, tanah + varietas tanaman padi, tanah + pupuk kandang ayam + biochar, dan pupuk kandang ayam + biochar + varietas tanaman padi dan masing-masing perlakuan diulang empat kali. hasil penelitian menunjukkan bahwa perlakuan pupuk kandang ayam + biochar tidak berpengaruh terhadap kemampuan menahan pelindian nh4 + dan no3 - pada satu minggu sebelum tanam, namun pada empat minggu setelah tanam perlakuan pupuk kandang ayam + biochar berpengaruh hanya menurunkan pelindian nh4 + . sedangkan varietas tanaman berpengaruh hanya terhadap pelindian no3 - . kata kunci: biochar, pupuk kandang ayam (pka), padi inpara, padi sikin, nh4 + , no3 -

This study aims to measure the effect of treatment on the size of nh4 + and no3 - leaching in acid sulphate soils by chicken manure + biochar and rice crops. this research was conducted in the greenhouse using a randomized block design (rak) single factor with combination treatment, where there is soil only, soil + varieties of rice plants, soil + chicken manure + biochar and chicken manure + biochar + varieties of rice plants and the respective each treatment was replicated four times. the results showed that the treatment of chicken manure + biochar did not affect the ability to withstand the nh4 + and no3 - leaching at one week before planting, but at four weeks after planting treatment of chicken manure + biochar affect only reduces leaching nh4 + . while the effect of plant varieties only to the no3 - leaching. keywords: biochar , chicken manure, inpara rice , sikin rice , nh4 + , no3 -