Study On Optimum Model of Fertilizing for spring wheat in Loess Hil l y Areas of South Ningxia
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Study On Optimum Model of Fertilizing for spring wheat in Loess Hil l y Areas of South Ningxia
Bulletin of Soiland Water ConservationVol. 14, Issue 5, Pages: 29-34(1995)
作者机构:
中国科学院水利部水土保持研究所,陕西杨陵,712100
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Published:1995
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LI Dingxin, DANG Zengchun, XU Xuexuan. Study On Optimum Model of Fertilizing for spring wheat in Loess Hil l y Areas of South Ningxia[J]. Bulletin of Soiland Water Conservation, 1995, 14(5): 29-34.
DOI:
LI Dingxin, DANG Zengchun, XU Xuexuan. Study On Optimum Model of Fertilizing for spring wheat in Loess Hil l y Areas of South Ningxia[J]. Bulletin of Soiland Water Conservation, 1995, 14(5): 29-34.DOI:
Study On Optimum Model of Fertilizing for spring wheat in Loess Hil l y Areas of South Ningxia
The field trials were conducted in south Ningxia province by using regression design of gerneral rotation. By means of establishing mathematical model,the relationship among N
P2o5,M and yield was analysised. In addition
a system of optimum model of fertilizing N
P
and M were obtained,with which the output would be above 3 OOOkg/ha in terrace and 2400kg/ha in tableland. Also,the limited line of fertilizer input were given:N 100.5kg/ha
P2o5105.0kg/ha
M 30 000kg/ha in terraces and N 110. 0kg/ha
P2o5
105. 0kg/ha,M 30 000kg/ha in tableland. Those results could be used in practice to improve yield