包膜控释尿素用量试验对花生产量和氮肥利用率的影响

Effect of Application Amount of Controlled-release Coated Urea on Peanut Yield and Apparent N Recovery Rates

2008年,在安徽肥东花生原种场砂泥田,用810-3花生品种,进行包膜控释尿素用量田间小区试验,研究不同包膜控释尿素不同用量对花生产量和氮肥利用率的影响。研究结果表明,全氮用量条件下,与普通尿素相比,SPCU100%和PCU100%分别增产15.6%和13.00%,产量差异显著;70%氮素用量条件下,与普通尿素相比,SPCU70%和PCU70%分别增产9.66%和23.12%,树脂包膜尿素产量差异极显著;与100%普通尿素用量相比,SPCU70%和PCU70%分别增产7.45%和20.64%,树脂包膜尿素产量达极显著差异。即表明,金正大包膜控释尿素增产效果显著;施用树脂包膜控释尿素减少氮素用量30%,增产效果显著。全氮用量条件下,SPCU100%和PCU100%氮素利用率分别为51.14%和54.92%,显著高于普通尿素;70%氮素用量条件下,SPCU70%和PCU70%氮素利用率分别为48.36%和60.87%,显著高于普通尿素。即表明,金正大包膜控释尿素显著提高尿素氮素利用率。金正大包膜控释尿素一次性在花生上基施具有增效、节肥、省工的特点。此外,还可改善花生农艺性状。

In 2008,field plot experiments were conducted to investigate the effects of controlled-releases coated urea on peanut yield and apparent N recovery rates at peanut foundation seed farm,Feidong with 810-3 variety.The results showed that in comparison with common urea,especially with the equal content of nitrogen,SPCU100%and PCU100%increased by 15.6%,13.00%respectively,the yield difference was significant;SPCU70%and PCU70%increased by9.66%,23.12%respectively,the yield difference of PCU was very significant;the yield of SPCU70%and PCU70%were 7.45%and 20.64%higher than those of urea100%respectively,the yield difference of PCU was very significant.It showed that the application of CRUs in peanut could improve the yield significantly,and the application of PCU could reduce the usage amount of nitrogen by 30%.The apparent N recovery rates of total nitrogen doses was 51.14%and 54.92%respectively,it was higher than common urea;and the apparent N recovery rates of 70%nitrogen doses was 48.36%and60.87%respectively,it was higher than common urea.It showed than Controlled-release coated urea by Kingenta could improve the apparent N recovery rates significantly.Controlled-release coated urea by Kingenta had features such as efficiency,saving fertilizer,labor-saving.Application of CRUs significantly increased the apparent N recovery rates.In addition,CRUs by Kingenda also showed a beneficial result on the peanut quality.