YAN Zhi-bin, QIN Jia-hai, WANG Ai-qin, et al. Effects of Water-retaining Fertilizer on Soil Water Storage Capacity and Optimal Fertilization[J]. Bulletin of Soiland Water Conservation, 2013, 32(4): 200-205.
YAN Zhi-bin, QIN Jia-hai, WANG Ai-qin, et al. Effects of Water-retaining Fertilizer on Soil Water Storage Capacity and Optimal Fertilization[J]. Bulletin of Soiland Water Conservation, 2013, 32(4): 200-205.DOI:
the effect of water retaining fertilizer on soil properties and the optimal fertilization were studied in Hexi Corridor.The result showed that the effect of factors which influenced corn yield was:CO(NH2)2>(NH4)2HPO4>furfural residue>water retaining fertilizer>ZnSO4·7H2O.The optimal factor combination was:CO(NH2)2600kg/hm2
(NH4)2HPO4350kg/hm2
ZnSO4·7H2O 30kg/hm2
water retaining fertilizer 19.98kg/hm2
and furfural residue 15 000kg/hm2.Dosage of fertilizer was negatively correlated with soil bulk density
and positively correlated with porosity
water storage capacity
botany and economic properties of corn.Corn grain number
grain weight
and corn yield increased with the amount of fertilizer application
but the marginal output decreased.The regression equation of quadratic equation on fertilizer dosage and yield was provided.The optimal fertilization was 9.99t/hm2.