ZHANG Yang,ZHANG Rong.Effect on Water Use Efficiency and Fertilizer Utilization Rate of Potato of Different Fertilizer Treatments Under Drip Irrigation[J].HEILONGJIANG AGRICULTURAL SCIENCES,2014,(12):46-51.
滴灌条件下不同施肥处理对马铃薯水分和肥料利用率的影响
- Title:
- Effect on Water Use Efficiency and Fertilizer Utilization Rate of Potato of Different Fertilizer Treatments Under Drip Irrigation
- 文章编号:
- 1002-2767（2014）12-0046-06
- 分类号:
- S532.062
- 文献标志码:
- A
- 摘要:
- 为探讨干旱区农业发展新途径，研究在滴灌条件下不同施肥处理对马铃薯产量、产量构成要素、水分利用效率和肥料利用率的影响。结果表明：N3P2K2(N 326.25 kg·hm-2,P2O5 138 kg·hm-2,K2O 90 kg·hm-2)处理下马铃薯株高、大（中）薯数、单株薯重明显提高，小薯数明显降低。在N3P2K2处理下马铃薯产量达到最高，达61 516 kg·hm-2。施氮量217.50 kg·hm-2处理下,氮肥利用率最高为39.31%；施磷量69 kg·hm-2处理下,磷肥利用率最高为16.09%；施钾量45 kg·hm-2处理下,钾肥利用率最高为64.67%。N3P2K2处理下水分利用率明显提高，达到了80.17 kg·hm-2·mm-1。
- Abstract:
- In order to explore a new way of agricultural development in arid area,the effect of different fertilizer treatments on potato yield,yield components,water use efficiency,and fertilizer utilization rate under drip-irrigation was researched.The results showed that plant height,number of big(middle)potato and potato weight per plant increased significantly and the number of small potato decreased obviously under N3P2K2 (N 326.25 kg·hm-2,P2O5 138 kg·hm-2,K2O 90 kg·hm-2)treatment.Potato yield reached the highest level under N3P2K2 treatment which was 61 516 kg·hm-2.Application N of 217.50 kg·hm-2 was the highest utilization rate of nitrogen which was 39.31%.Application P of 69 kg·hm-2 was the highest utilization rate of phosphate which was 16.09%.Application K of 45 kg·hm-2 was the highest utilization rate of potash for 64.67%.Water use efficiency was obviously improved under N3P2K2 treatment and reached 80.17 kg·hm-2·mm-2.
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备注/Memo
基金项目：青海省科技厅资助项目（2012-N-164）