摘要
为明确土壤改良剂对盐碱地的改良效果,以藜麦为材料,设置常规施肥(氮肥0.2g/kg+磷肥0.2 g/kg+钾肥0.1g/kg,G)、常规施肥+聚丙烯酰胺(PAM)[0.25(GP1)、0.50(GP2)、0.75(GP3)g/kg]和常规施肥+禾康盐碱土壤改良剂[2(GX1)、4(GX2)、6(GX3)mL/kg],以不施磷肥+不施改良剂为对照(CK),采用盆栽试验分析两种改良剂在藜麦种植前后对土壤性质及藜麦产量的影响。结果表明:施用改良剂能提高土壤水稳性团聚体含量和含水率,并降低土壤全盐量、钠吸附比和土壤pH,在GX2和GP2处理下改良效果显著,与G处理相比≥0.25mm水稳性团聚体百分数分别显著提升45.8%、50.7%,土壤脱盐率和土壤含水率分别提升43.2%、40.0%和41.8%、30.0%,土壤钠吸附比分别显著降低39.3%、28.7%,土壤pH显著降低,较播种前分别降低0.36、0.31。施用改良剂能显著提升藜麦的籽粒产量,在GX2和GP2处理下达到峰值,与G处理相比分别显著提升81.6%、78.5%;藜麦地上部吸磷量显著提升,分别升高36.2%、34.5%。说明两种改良剂均能改善土壤性质,提升藜麦吸磷量和产量,PAM最适用量为0.50g/kg,禾康盐碱土壤改良剂最适用量为4mL/kg。综合因素考虑在作用效果方面,两者之间差异不显著;在经济效益方面,PAM优于禾康盐碱土壤改良剂。
In order to clarify the improvement effect of soil amendments on saline-alkali land, quinoa was used as material, the treatments i.e.the conventional fertilization( nitrogen fertilizer 0.2 g/kg + phosphate fertilizer 0.2 g/kg + potassium fertilizer 0.1 g/kg, G), conventional fertilization + polyacrylamide(PAM) [0.25(GP1), 0.50(GP2), 0.75(GP3) g/kg] and conventional fertilization + He Kang saline soil amendment [2(GX1), 4(GX2), 6(GX3) mL/kg] were set up, and no phosphate fertilizer + no amendments was taken as the control(CK).A pot experiment was conducted to analyze the effects of the two amendments on soil properties and quinoa yield before and after planting of quinoa.The results showed that the application of amendments could increase soil water-stable aggregate content and water content, and reduce soil total salt content, sodium adsorption ratio and soil pH.The improvement effect was significant under the treatments of GX2 and GP2.Compared with the treatment of G, the percentage of ≥0.25 mm water-stable aggregates significantly increased by 45.8%, 50.7%, the soil desalination rate increased by by 43.2%, 40.0% and soil moisture content increased by 41.8%, 30.0%, and the soil sodium adsorption ratio significantly decreased by 39.3% and 28.7%, respectively.The soil pH was significantly reduced, which was 0.36 and 0.31 respectively lower than before sowing.Compared with treatment G, the application of modifiers could significantly increase the grain yield of quinoa, reaching respectively the peak by 81.6% and 78.5% under GX2 and GP2 treatments, the phosphorus uptake of quinoa significantly increased by 36.2% and 34.5%, respectively.The results showed that both amendments could improve soil properties and increase the phosphorus uptake and yield of quinoa.The most suitable amount of PAM is 0.50 g/kg, and the most suitable amount of He Kang saline soil amendment is 4 mL/kg.Considering comprehensive factors, there is no significant difference between the two in terms of effect;In economic benefits, PAM is better
作者
庞春花
杨洋
张永清
侯钰晨
PANG Chunhua;YANG Yang;ZHANG Yongqing;HOU Yuchen(College of Life Sciences,Shanxi Normal University,Taiyuan 030031,China;College of Modern Arts and Sciences,Shanxi Normal University,Linfen Shanxi 041000,China;College of Geographical Sciences,Shanxi Normal University,Taiyuan 030031,China)
出处
《西北农业学报》
CAS
CSCD
北大核心
2022年第9期1185-1193,共9页
Acta Agriculturae Boreali-occidentalis Sinica
基金
国家自然科学基金(31571604)
山西师范大学现代文理学院基础研究项目(2019JCY15)
山西师范大学现代文理学院大学生创新创业训练项目(2020DC09)。
关键词
改良剂
盐碱地改良
藜麦
产量
吸磷量
Improver
Saline-alkali soil improvement
Quinoa
Yield
Phosphorus uptake
