砂姜黑土区控释尿素与普通尿素掺混对小麦/玉米轮作的产量及氮肥利用率的影响

Study on the Effect of Different Blend Rations between the Controlled Released Urea and Conventional Urea on Wheat-Corn

试验结果表明:控释尿素与普通尿素掺混处理的产量在小麦玉米轮作上均以控释尿素掺混30%普通尿素处理最好。小麦产量:新坡村与农科所农场的产量分别为8096kg/hm2,8211kg/hm2;比控释尿素单施处理增产5.4%和7.2%,比普通尿素单施处理增产21.0%和22.6%,比对照(CK)增产40.2%和44.2%,它们之间的差异达5%或1%显著水平。小麦氮肥利用率变化趋势与产量变化趋势基本一致,均以控释尿素掺混30%普通尿素处理最高,新坡村与农科所农场小麦氮肥利用率分别为54.5%和52.7%。玉米产量:新坡村与农科所农场的产量分别为8715kg/hm2,9020kg/hm2,比控释尿素单施处理增产6.1%,6.7%,比普通尿素单施处理增产16.2%,16.1%,比对照增产55.7%,56.6%,它们之间的差异达1%显著水平。

The experiments of different blend rations between the controlled released urea and conventional urea were conducted in Xinpo Village and Institute of agricultural science of ZHUMADIAN, respectively. The wheat results showed that, the yields of the blend ration between 70 % controlled released urea and 30 % conventional urea were the best, which were 8096 kg/hm2 and 8211 kg/hm2, for Xinpo Village and Institute of agricultural science of ZHUMADIAN respectively. It increased 5.4 % and 7.2 % compared with the single release-controlled urea test, and 21.0 % and 22.6 % compared with the single conventional urea test, and 40.2 % and 44.2 % compared with the contrasting test. The significant difference between these tests amotmted to 1%. As to the effect of the use efficiency of fertilizer-nitrogen, the composition above was also the best; The corn results showed that, the yields of the blend ration between 70 % controlled released urea and 30 % conventional urea were the best, which were 8715 kg/hm2 and 9020 kg/hm2, for Xinpo Village and Institute of agricultural science of ZHUMADIAN respectively. It increased 6.1% and 6.7 % compared with the single release-controlled urea test, and 16.2 % and 16.1% compared with the single conventional urea test, and 55.7 % and 56.6 % compared with the contrasting test. The significant difference between these tests amounts to 1%.