Abstract:
Chao soil is one type of calcareous soils. Nitrogen, phosphorous and some micronutrients like manganese were usually deficient. For applying fertilizers efficiently, We selected N, P, and Mn as three experiment factors and adopted the secondary orthogonalrotational-combination design to establish an optimized model of fertilization. The quadratic equation is as follows:When N, P, and Mn fertilizers were applied to soil in 12. 85-16. 35, 11. 36- 14. 00, and 1. 16-1. 49 kg/ mu, respectively, the output of wheat could reach as high as more than 375 kg/mu, and the input-output ratio was about 1: 5.
Key words:
Chao soil,
Orthogonal-rotational-combination design,
Optimized model of fertilization
CLC Number:
Wang Jinfang, Zhu Qiqing. Establishment and Application of Optimized Model of Fertilization on Chao Soil for High-yield Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1995, 10(1): 101-105. doi: 10.3321/j.issn:1000-7091.1995.01.020.