中文摘要：

参比通常施肥量进行番茄盆栽试验,以施用普通硝酸铵为对照,研究了硝酸铵负载率为300%的凝胶态缓释肥的节肥节水效应.在硝酸铵和水用量相同的情况下,施用凝胶态肥能使番茄的产量提高82%以上;当硝酸铵用量减少至60%时,番茄的长势和产量与直接施用全量硝酸铵的情况没有显著差异.结果表明,凝胶态肥具有增产和潜在的节肥功效.在硝酸铵用量相同的情况下,施用凝胶态肥,当浇水量减少至80%和60%时,番茄的产量分别提高42.05%和30.39%,说明凝胶态肥具有显著的保水节水功能.

英文摘要：

The effect of 300% ammonium nitrate loading gel-state slow release fertilizer on fertilizer and water saving of tomato was investigated by using pot experiments. Under the same nitrogen and water application ,average yields of tomatoes of gel-state ：fertilizer application increased more than 82% compared with directly applying ammonium nitrate; under reducing ammonium nitrate to 60% ,there was no significant difference between gel-state fertilizer application and directly applying ammonium nitrate. Gel-state fertilizer could save fertilizer. Under the same ammonium nitrate application and even reducing water to 80% and 60% , compared with directly applying ammonium nitrate, the yields of tomatoes of gel-state ammonium nitrate fertilizer increased more than 42.05% and 30. 39% ,which denoted that gel-state fertilizer could save water.