辽宁省辽中县水稻配方施肥试验报告

Test Report of Fertilizer Formula in Paddy Rice in Liaozhong County,Liaoning Province

为制定辽中县水稻较适宜的施肥配方及最佳施肥量,推进辽宁省辽中地区测土配方施肥技术的深入开展,特进行该项试验。试验选用当地主栽品种辽星1号,采用2次回归"3414"设计方式,N、P、K3因素4水平,14个处理组合。结果表明,最佳经济施N量为17.54kg/667m2,产量为698.10kg/667m2。最佳经济施P量(P2O5)为7.91kg/667m2,产量为689.60kg/667m2。最佳经济施K量(K2O)为7.00kg/667m2,产量为696.00kg/667m2。根据结果,辽中县中等肥力地块推荐667m2最佳经济施肥量为N14.50、P2O55.50、K2O6.00kg/667m2。

This experiment is conducted in order to constitude more appropriate fertilizer formula and the best fertilizer rate,to improve the technological development of fertilizer application on paddy rice in Liaozhong county.Liaoxing 1 as the main cultivar is selected in the experiment.The experimental design adopted quadratic regression of '3414' method with three factors nitrogen,phosphorus,potassium and four levels and fourteen treatments.The results showed that the optimum nitrogen-applying amount is 17.54 kg/667 m2,yield 698.10 kg/667 m2;the optimum phosphorus-applying(P2O5)amount was 7.91 kg/667 m2,yield 689.60 kg/667 m2;the optimum potassium-applying(K2O) amount is 7.00 kg/667 m2,yield 696.00 kg/667 m2.According to the results,the recommendation of the optimum economical fertilizer-applying amount per 667 m2 for middle-fertility soil in Liaozhong county is N 14.50、P2O5 5.50、K2O 6.00 kg。