优质稻肥料效应试验

Effect of fertilizer on high-quality rice

为取得有关施肥参数,建立优质稻施肥模型,选择高、中、低肥力田块,应用3因素4水平设计方案对优质稻进行田间肥效试验。结果表明,在一定范围内氮、磷、钾肥的施用对优质稻的增产作用是氮肥大于磷肥,磷肥大于钾肥,建议梁河县优质稻高肥力田块氮、磷、钾施用量分别为N 73 kg/hm2、P2O535.6 kg/hm2、K2O87.8 kg/hm2,应施好氮、磷肥,增施钾肥。中肥力、低肥力田块氮、磷、钾施用量分别为N 87.48～103.7 kg/hm2、P2O559～63 kg/hm2、K2O 47.6～52 kg/hm2,应增施氮肥、磷肥,适量钾肥。

To obtain relevant fertilization parameters as well as to establish a fertilization pattern for cultivation,three types of soils—high,medium and low fertility plot soils—were purposefully selected and the fine rice was applied in the fertilizer effect test.The results showed that the amount of nitrogen,phosphorus and potassium fertilizers within a certain range produced effect as following：nitrogen being greater than phosphorus,and phosphorus than potassium.Therefore,the suggestion was that in the Lianghe county area,the proportion of these three chemicals in high-quality soils should be N 73 kg/hm2,P2O5 35.6 kg/hm2and K2O 87.8 kg/hm2,meaning due proportion of nitrogen and phosphorus but more potassium fertilizers,while in the medium and low fertility plot soils the proportion should be N 87.48~103.7 kg/hm2,P2O5 59~63 kg/hm2and K2O 47.6~52 kg/hm2,indicating an increase in nitrogen and phosphorus fertilizers but proper application of potassium fertilizer.