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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。
In order to make more suitable fertilization formula and the best fertilization amount for paddy rice in Liaozhong county and promote the development of soil testing and formula fertilization technology in Liaozhong area of Liaoning Province, this experiment was carried out. The experiment selected the local cultivars Liaoxing 1, using the regression model of “3414”, the 4 factors of N, P and K3, and 14 treatment combinations. The results showed that the optimum economic application of N was 17.54kg / 667m2 and the yield was 698.10kg / 667m2. The optimum economic application P (P2O5) was 7.91kg / 667m2, the yield was 689.60kg / 667m2. The best economic K (K2O) is 7.00kg / 667m2 and the yield is 696.00kg / 667m2. According to the results, the recommended economic fertilization amount of 667m2 for medium fertility plots in Liaozhong County was N14.50, P2O55.50 and K2O6.00kg / 667m2.