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在驻马店市的新坡村与和兴农场进行了小麦-玉米轮作制下的控释尿素与普通尿素用量试验,结果表明:在小麦玉米上均以控释尿素100%处理最好。小麦产量:新坡村与和兴农场的产量分别为7980和8290 kg hm-2;比同等用量的普通尿素增产855~1015 kg hm-2,增产12.0%~14.0%,增产效果显著;小麦氮素利用率以控释尿素100%处理最高,分别为42.37%和46.02%;氮素用量相同时,在小麦上,控释尿素氮素利用率高于普通尿素氮素利用率。玉米产量为6665 kg hm-2和6375 kg hm-2,比同等用量的普通尿素增产335~500 kg hm-2,增产5.5%~8.1%,增产效果显著;控释尿素用量从50%,70%到100%时,小麦、玉米产量随氮肥用量增加而增加,普通尿素也呈现同样趋势,随尿素用量的增加小麦、玉米产量在增加;70%控释尿素与100%普通尿素处理5、0%控释尿素与70%普通尿素处理之间,产量差异不大,说明使用控释尿素用量比普通尿素用量减少1/3的纯氮量时,小麦、玉米作物产量并不下降。
Controlled-release urea and ordinary urea were tested under the wheat-corn rotation system in Xinpo Village and Hexing Farm of Zhumadian City. The results showed that 100% of controlled release urea was best on wheat and corn. Wheat yield: The yields of Xinpocun and Hexing farms were 7980 and 8290 kg hm-2, respectively. Compared with the same amount of ordinary urea, the yields of 855-1015 kg hm-2 and 12.0% -14.0% increased significantly, and the yield of wheat nitrogen Urea utilization rate was highest at 100% of controlled release urea, which was 42.37% and 46.02% respectively. When the same amount of nitrogen was used, the utilization of controlled release urea nitrogen was higher than common urea nitrogen utilization rate in wheat. The yields of maize were 6665 kg hm-2 and 6375 kg hm-2, which increased 335-500 kg hm-2 and 5.5% -8.1% respectively compared with the same amount of common urea. The yield of corn was increased from 50% to 70% The yield of wheat and maize increased with the increase of N application rate, and the same tended to increase with the increase of N application rate. The yield of wheat and maize increased with the increase of urea dosage. The treatment of 70% C and U 100% % Of controlled release urea and 70% of ordinary urea treatment, the yield difference is not large, indicating that the use of controlled release urea dosage than the average amount of urea to reduce the amount of 1/3 of pure nitrogen, wheat, corn crop yield does not decline.