Abstract:

The aim was to provide the basis on the application of hydroabsorbent mixed slow-released fertilizer in chrysanthemum. A pot experiment was conducted to study and compare the effects of hydroabsorbent mixed slow-released fertilizer and slow-release fertilizer on chrysanthemum’s growth, yields and nitrogen effects. Four treatments were set up, which were control (CK), hydroabsorbent (B), slow-release fertilizer (H) and hydroabsorbent mixed slow-released fertilizer (BH). The results showed that, compared with H treatment, the hydroabsorbent mixed slow released fertilizer significantly boosted the growth of chrysanthemum, and including plant height increased about 8 cm, chlorophyll content increased by over 4%, biomass increased by more than 25%. The contents of N, P and K of chrysanthemum treated with BH were significant more than those treated with H, and nitrogen use efficiency improved more than 23%. Meanwhile, the hydroabsorbent mixed slow-released fertilizer could significantly reduce soil nitrate content, thereby reducing the risk of nitrogen leaching loss. Therefore, the hydroabsorbent mixed slow-released fertilizer had a significant effectiveness for chrysanthemum, and was better than slow-release fertilizer.