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9年的田间定位试验结果表明,华北太行山前平原石灰性潮褐土上,磷肥总用量相同的情况下,8年一次储备性施磷和每年补偿性施磷的肥效基本相同。磷肥增产效应高于当年施用的增产效果,表现出明显的残效。虽然,储备性施磷第一年的利用率只有6.5一13.7%,前8年之和达到24.1一28.5%,9年三个时段平均利用率27.9-42.8%。每年施磷的为19.5一42.9%。年施磷量为32.75kg/hm2能保持较高的产量(10057.5kg/hm2),但不能改善土壤的供磷状况,年施磷量为65.5kg/hm2时,既能满足作物对磷的需求,又能使土壤速效磷库得以补充。氮磷配合施用能提高肥料的增产效应和利用率。
The results of field experiment in the past 9 years show that the effect of reserve phosphorus application and annual compensation phosphorus application is basically the same when the total phosphorus fertilizer is the same on the calcareous cinnamon soil in the North Taihang piedmont plain. The increase effect of phosphate fertilizer was higher than that of the same year and showed obvious residual effect. Although the utilization rate of reserve-use phosphorus in the first year was only 6.5 to 13.7%, the sum of the first eight years reached 24.1 to 28.5%, the average utilization rate in three years in the past 9 years was 27.9-42 .8%. Phosphorus annually is 19.5 to 42.9%. Annual phosphorus application rate of 32.75kg / hm2 can maintain a high yield (10057.5kg / hm2), but can not improve the status of soil phosphorus supply, the annual phosphorus application of 65.5kg / hm2, both to meet the crop Phosphorus demand, but also to make available soil available phosphorus base to be replenished. Application of nitrogen and phosphorus fertilizer can increase the yield effect and utilization of fertilizer.