WANG Lishu,SONG Liqiang,SONG Furu,et al.Effects of Organosilicone Functional Fertilizers on Soil Water Transport Characteristics[J].Northern Horticulture,2022,(08):76-81.[doi:10.11937/bfyy.20213958]
有机硅功能肥使用方式对土壤水分运移特征的影响
- Title:
- Effects of Organosilicone Functional Fertilizers on Soil Water Transport Characteristics
- Keywords:
- saline-alkali land improvement; salt migration; water transport; organosilicon functional fertilizer; the wetting front
- 文献标志码:
- A
- 摘要:
- 以有机硅功能肥和盐碱土为试材，采用室内模拟试验，设置不施用改良剂（CK），施入深度5 cm(W5)、10 cm(W10)、15 cm(W15)、20 cm(W20)，以及表层层施(W-0)、层施位置5 cm(W-5)、10 cm(W-10)、15 cm(W-15)9个处理，研究了有机硅功能肥施入深度和层施位置对土壤水分运移和盐分变化的影响，以期为有机硅功能肥的使用方式和改良盐碱地提供参考依据。结果表明：有机硅功能肥施入深度和层施位置对土壤水分入渗特性有影响。随着施入深度的增加，湿润锋运移距离和累积入渗量减小；层施位置越接近土柱表层，累积入渗量和湿润锋运移距离明显减小，随着入渗时间的延长，各处理之间累积入渗量和湿润锋运移会在某一时刻相等。有机硅功能肥增加土壤中含水量，与层施位置相比，施入深度对土壤含水量影响比较明显。有机硅功能肥施入深度和层施位置影响着土壤盐分含量变化。有机硅功能肥能够降低土壤盐分含量。在含有有机硅功能肥土层深度内，电导率明显低于对照处理CK，施入深度越深，电导率越小，不含有有机硅功能肥土层深度内，电导率明显增大。在层施位置周围，有机硅功能肥使土壤盐分出现最小值，其它土层位置电导率较大。
- Abstract:
- Organosilicon functional fertilizer and saline-alkali soil were used as experimental materials.Nine treatments were set up,including no modifier (CK),application depth 5 cm (W5),10 cm (W10),15 cm (W15),20 cm (W20),surface layer application (W-0),layer application position 5 cm (W-5),10 cm (W-10),15 cm (W-15).The effects of application depth and position of organosilicon functional fertilizer application on soil water transport and soil change were studied,in order to provide reference for the use of organosilicon functional fertilizer and the improvement of saline-alkali land.The results showed that the depth and location of organosilicon functional fertilizer had effects on soil water infiltration characteristics.With the increase of penetration depth,the migration distance of wetting front and the cumulative infiltration amount decrease.The closer the layer application location was to the surface of the soil column,the cumulative infiltration amount and the migration distance of wetting front decrease obviously.With the extension of infiltration time,the cumulative infiltration amount and the migration distance of wetting front between different treatments would be equal at a certain moment.Organosilicon functional fertilizer increased soil water content,and the effect of application depth on soil water content was more obvious than that of layer application.Organosilicon functional fertilizer could reduce soil salt content.In the depth of the soil layer containing organosilicon functional fertilizer,the electrical conductivity was significantly lower than that of the control.The deeper the application depth was,the lower the electrical conductivity was.In the depth of the soil layer without organosilicon functional fertilizer,the electrical conductivity increased significantly.Around the layer application site,the organosilicon functional fertilizer made the soil salinity appear the minimum value,and the electrical conductivity of other soil layer sites was higher.
参考文献/References:
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备注/Memo
第一作者简介：王利书(1982-)，女，博士，副教授，现主要从事农业水土等研究工作。E-mail:fc8232@163.com.责任作者：宋福如（1950-），男，本科，高级工程师，现主要从事土壤学等研究工作。E-mail：guigukejichu@163.com.基金项目：河北省自然科学基金资助项目（E2019402468,D2019402151）；河南省节水农业重点实验室开放课题资助项目（FIRI2019-01-01）；河北省高层次人才资助项目（B2019003035）。收稿日期：2021-09-23