摘要
为研究新型液态土壤调理剂对土壤持水特性的影响,以市场常用的固体颗粒状保水剂为对照用试验试剂,运用不同试剂、不同施用量进行全面实验的试验方法,得出土壤水分特征曲线。试验中新型液态土壤调理剂施用量分别为:28,21,14g/m2;固体颗粒状保水剂施用量分别为14,11,7g/m2。试验通过激光粒度分析仪将不同试验处理的土样进行粒径分析,结合VG模型及RETC得出不同处理的土壤水分特征曲线。试验结果表明:试验所用新型液态土壤调理剂与固体颗粒状保水剂相比,显著提高了土壤的持水特性,但并不是随着试剂用量的增大持水特性增大的正比例关系。在不同的土层深度,当使用新型液体土壤调理剂时,在土层深度为0~10,10~20cm时均为当使用量为21g/m2时土壤的持水效果达到最优,当使用固体颗粒状保水剂时,0~10,10~20cm处的最优用量分别为7,14g/m2;新型液体土壤调理剂从施用方法、对土壤的持水能力的增加幅度以及降低土壤板结等方面相比较而言,新型液体土壤调理剂与试验用固体颗粒状保水剂相比,更为适宜。
The effects of different dosage of soil conditioner on the water retention of soil water were studied by using new soil conditioner, solid granular water retention agent and field soil. By setting the new soil conditioner and solid particle aquasorb two kinds of reagents, seems is respectively：New soil conditioner is divided into 28,21,14g/m 2, solid particles and water retention agent is divided into 14,11,7 g/m 2 ,to conduct a comprehensive test, using the VG model and RETC give different treatment of soil water characteristic curve. The results showed that the different dosage of new soil conditioner and the solid particle water retention agent had different effects on the water holding characteristics of soil. The effect of new soil conditioner and solid particle water retention agent on the water retention of soil is not proportional to the increase of concentration.The soil water moisture effect is best in soil depth of 0—10 cm,10—20 cm,when the new soil conditioner usage of 21 g/m 2（B2）.0—10 cm for solid particles and water retention agent, the optimal dosage of 10-20 cm respectively 7 g/m 2（C3）, 14 g/m 2（C1）. New soil conditioner and solid particle water retention agent are more suitable for the use of the method of application, the effect of soil water retention and lower soil plate junction.
作者
霍丽涛
唐啸宇
郄志红
吴鑫淼
冉彦立
HUO Li-tao;TANG Xiao-yu;QIE Zhi-hong;WU Xin-miao;RAN Yan-li(College of Urban and Rural Construction,Hebei Agricultural University,Baoding 071001,China;College of Science and Technology,Hebei Agricultural University,Huanghua 061100,China)
出处
《河北农业大学学报》
CAS
CSCD
北大核心
2018年第3期112-116,共5页
Journal of Hebei Agricultural University
基金
河北省科技厅重点研发计划项目(17227005D)
关键词
新型液体土壤调理剂
固体颗粒状保水剂
浓度
土壤水分特征曲线
soil conditioner
synthetic chemical water protection agent
the concentration of soil conditioner
soil water characteristic curve
