Fertilization Model and Recommendations for Early Rice
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摘要: 选择建阳代表性土壤进行早稻的氮磷钾3414田间肥料试验。结果表明,氮肥的增产效果最高,平均增产率为26.0%;其次是钾肥,平均增产率为12.2%;磷肥的增产效果最低,平均增产率为1.9%。根据10组早稻氮磷钾肥效试验结果,分别建立土壤肥力高、中、低3个等级的区域施肥模型。根据模型求早稻的氮磷钾最佳施肥量平均为N 129.7 kg·hm-2、P2O525.0 kg·hm-2、K2O 102.6 kg·hm-2,氮磷钾比例为1:0.19:0.79。根据推荐施肥量在福建省建阳市做示范推广,取得很好的增产增收效果。Abstract: Representative soils in Jianyang City were selected to conduct a field NPK fertilization experimentation on Early Rice 3414. The results showed that (a) N exhibited the highest yield increasing effect at 26.0%; (b) P fertilization increased yield 12.2% on average; and (c) K showed the least yield increase at 1.9%. Based on 10 tests on the Early Rice, 3 mathematic models were established. They included the high, medium and low fertilization effect field models. According to the models, the optimum fertilizer applications were N 129.7 kg穐m-2, P2O5 25.0 kg穐m-2, and K2O 102.6 kg穐m-2, with the proportion of N:P:K at 1:0.19:0.79. Using the models, various fertilizations were practiced throughout Jianyang City with satisfactory results.
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[1] 侯彦林. "生态平衡施肥":施肥理论和技术体系的创新[J]. 世界科技研究与发展,2000,22 (3):67-71.
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