小麦-玉米轮作制下的控释肥肥效试验研究

Study on the Effect of the Control Released Urea in the Wheat-Corn Rotation System

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。

The effects of control released urea（CRU） on wheat and corn yields in wheat-maize rotation system are studied in Xinpo Village and Hexing Farm,respectively.The results showed that,the yields of the treatment of CRU100% were the highest.The yields of wheat were 7980 kg hm-2 and 8290 kg hm-2f,or Xinpo Village and Hexing Farm respectively.It increased 12.8% and 14.3% compared with the 100% conventional urea test.As to the effect of the use efficiency of fertilizer-nitrogen,the composition above was also the best.Compared with the equivalent conventional urea,the use efficiency of fertilizer-nitrogen of control released urea was higher.The yields of corn were 6665 kg hm-2 and 6375 kg hm-2f,or Xinpo Village and Hexing Farm respectively,which increased 5.5% and 8.1% compared with the 100% conventional urea test.The crop yield increased with the nitrogen application,as the application of control released fertilizer among 50%,70% and 100%.And it was the same in conventional urea.As to the amount decreased by 1/3,the yields were not reduced.