控释尿素和普通尿素在夏玉米上的应用效果比较

Study on the Applying Effect of the Controlled Released Urea and Conventional Urea on Summer Corn

采用控释尿素和普通尿素2种氮素肥料在驻马店市驿城区水屯镇新坡村和驻马店市遂平县和兴乡和兴农场进行夏玉米肥效试验研究。两地试验结果表明:100%控释尿素处理玉米产量最高,为6 665 kg/hm2和6 375 kg/hm2,与同等氮素用量的普通尿素相比增产500 kg/hm2,335kg/hm2,增幅为8.1%,5.5%,增产效果显著;控释尿素用量在50%,70%到100%时,产量随氮肥用量的增加而增加,普通尿素也呈现同样趋势,随尿素用量的增加玉米产量增加;70%控释尿素处理与100%普通尿素处理、50%控释尿素处理与70%普通尿素处理之间相比,产量差异不大,没有达到显著性差异。说明施用控释尿素可以比普通尿素用量减少1/3的纯氮用量,玉米产量并不下降。

The experiments were couducted to study the different effects of controlled release urea （CRU） and conventional urea on summer corn in Xinpo village and Hexing farm, respectively. The results show that the yields of the treatment of CRU 100% were the highest, which were 6 665 kg/ha and 6 375 kg/ha in Xinpo village and Hexin farm respectively. It increased 8.1% and 5.5 % comparedwith the 100% release-controlled urea test. The yield increased with the changing of CRU fertilizer from 50%,70% to 100%. And it were the same in conventional urea. As the amount of CRU decreased by 1/3,the yields were not reduced .