摘要： 采用"3414"回归设计模型,通过田间试验和化学分析相结合的方法,研究了氮、磷、钾肥用量对土壤养分含量时空变化及冬小麦产量的影响。结果表明,土壤养分含量的时空变化与施肥量存在一定的相关性,肥料合理配施可使小麦增产20.57%~41.39%,试验各处理中,N2P2K2(N 255,P2O5150,K2/sub>O 150 kg/hm2)配施效果最好。在本试验条件下,氮、磷、钾肥的产量模型为:Y=5720.338+5.1428N+12.0287P+7.3229K-0.0121N2-0.0387P2-0.0216K2+0.0088NP-0.0005NK-0.0028PK,最高产量为8083.16 kg/hm2,此时,N,P2O5,K2/sub>O的施用量分别为275.17,181.10,154.59 kg/hm2;其最佳施用量分别为212.31,152.23,117.51 kg/hm2,此时小麦产量为7985.18 kg/hm2,纯收益达948.62元/hm2。
关键词:
施肥量,
土壤养分,
小麦产量,
肥料效应方程
Abstract: Use the ″3414″regression design model to studied the effect of N,P and Kfertilizer application on soilnutrient dynamic change and yield in wheat through field experimentation and chemical analysis. The results indicatesthat,the change of soil nutrient content exhibits a definite rules and a reasonable application of fertilizer could increasewheat yield by 20. 57 % - 41. 39 %,the treatment of N2P2K2 (N 255 kg/ ha,P2O5 150 kg/ ha,K2O 150 kg/ ha) was thebest.And at the base of experiment,the yield model of the fertilizers is Y= 5 720. 338 + 5. 142 8N + 12. 028 7P + 7. 3229K- 0. 012 1N2 - 0. 038 7P2 - 0. 021 6K2 + 0. 008 8NP - 0. 000 5NK- 0. 002 8PK,and its top yield is at 8 083. 16kg/ ha while the application quantity of N,P2O5 and K2O is at 275. 17,181. 10 and 154159 kg/ ha; Its the economical andreasonable quantity of fertilizers application are 212. 31,152. 23 and 117. 51 kg/ ha while the wheat yield is 7 985. 18kg/ ha,the profits of applying fertilizer is 948. 62 yuan/ ha.
Key words:
Application quantity of fertilizer ,
Soil nutrient ,
Wheat yield ,
Fertilizer effect equation
中图分类号:
姜孟辉, 张拴庄, 薛世川, 彭正萍, 左红权, 曹京立. 肥料合理调配对土壤养分动态及小麦产量的影响[J]. 华北农学报, 2008, 23(S2): 286-289. doi: 10.7668/hbnxb.2008.S2.066.
JIANG Meng-hui, ZHANG Shuan-zhuang, XUE Shi-chuan, PENG Zheng-ping, ZUO Hong-quan, CAO Jing-li. Effect of Reasonable Allocation of Fertilizer on Soil Nutrient Dynamic and Yield in Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(S2): 286-289. doi: 10.7668/hbnxb.2008.S2.066.