试验采用裂区设计,以肥料为主区,密度为副区,研究高产杂交籼稻新组合“特优649”的密度和氮肥、磷肥、钾肥施用量与产量的关系,结果表明:当密度为37.5万(/hm2,或株行距为20cm×13.2cm,氮肥施用量为225kg纯氮/hm2,其N,P2O5,K2O的比例为1.0:0.5:0.8时,产量最高,平均达9.24t/hm2,最高达9.36t/hm2。据此提出产量指标为9.0t/hm2以上的优化农艺措施组合为:每hm2密度37.5万(,每(插2粒谷秧,纯氮用量225kg,P2O5用量112.5kg,K2O用量180.0kg,其中基肥为猪牛粪22.5t+30kg过磷酸钙;试验还提出了相配套的水分运筹方法。 The experiment adopted the design of fissure area, taking the fertilizer as the main area and the density as the sub-area, and studied the relationship between the density and the application rate of nitrogen, phosphate and potassium fertilizer and the yield of the new indica hybrid rice combination Teyou 649. The results showed that when the density was 37.5 The yield was the highest (9.24t / hm2) when the ratio of N, P2O5 and K2O was 1 000 000 / hm2 or the row spacing was 20 cm × 13.2 cm and the nitrogen fertilizer was 225 kg pure nitrogen / hm2. (Up to 9.36t / hm2) .Accordingly, the optimal combination of agronomic measures with the yield above 9.0t / hm2 was: 375,000 per hm2 (per 2 seedlings per valley, 225kg pure nitrogen, 112.5kg P2O5, K2O dosage of 180.0kg, of which the base manure was pig manure 22.5t + 30kg superphosphate; test also proposed a corresponding method of water transport.