Effects of Water-retaining Fertilizer on Soil Water Storage Capacity and Optimal Fertilization

YAN Zhi-bin; QIN Jia-hai; WANG Ai-qin; XIAO Zhan-wen; ZHAO Yun-chen; CHENG Hong-yu; ZHAO Jing

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Effects of Water-retaining Fertilizer on Soil Water Storage Capacity and Optimal Fertilization

- Effects of Water-retaining Fertilizer on Soil Water Storage Capacity and Optimal Fertilization
- Bulletin of Soiland Water Conservation Vol. 32, Issue 4, Pages: 200-205(2013)
- 作者机构：
  
  1. 河西学院农业与生物技术学院,甘肃,张掖,734000
  2. 甘肃敦煌种业股份有限公司,甘肃,酒泉,735000
  3. 甘肃高校河西走廊特色资源利用省级重点实验室,甘肃,张掖,734000
  4. 中国科学院兰州化学物理研究所,甘肃,兰州,731000
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
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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：

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：

摘要

在甘肃省河西内陆灌区的制种玉米田

采用田间试验方法

研究了保水型专用肥对土壤物理性质和蓄水量的影响及制种玉米田最佳施肥量。结果表明

影响玉米产量的因素由大到小依次为:CO(NH

)

>(NH

)

HPO

>糠醛渣>保水剂>ZnSO

·7H

O;因素间最佳组合为:CO(NH

)

600kg/hm

(NH

)

HPO

350kg/hm

ZnSO

·7H

O 30kg/hm

保水剂19.98kg/hm

糠醛渣15 000kg/hm

。保水型专用肥施肥量与玉米制种田容重呈负相关关系

与孔隙度、蓄水量、玉米植物学性质和经济性状呈正相关关系。随着保水型专用肥施用量梯度的增加

玉米穗粒数、穗粒重、百粒重、产量在增加

但边际产量、边际利润表现为递减

保水型专用肥施用量在10.00t/hm

的基础上再增加2.50t/hm

收益出现负值。经回归统计分析

保水型专用肥施用量与玉米产量可用一元二次方程拟合

经济效益最佳施肥量为9.99t/hm

玉米的理论产量为6 715.33kg/hm

。

Abstract

By field experiment

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.

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