Compared with the CUF, the CRF significantly increased the contents of alkalytic N (ALR-N) and NH4(superscript + subscript 4)-N in the paddy soil, facilitating N uptake by the roots of rice.

• 与普通氮肥相比，施用控释氮肥有效提高了稻田土壤中碱解氮和铵态氮含量，促进了水稻植株和根系对氮素的吸收利用；