Effects of Combined Application of Super Absorbent Polymer and Microbial Fertilizer on Oat Growth and Water Utilization in Dry Farmland of Loess Plateau

Tian Lu; Liu Jinghui; Zhao Baoping; Mi Junzhen; Li Yinghao; Fei Nan

doi:10.13961/j.cnki.stbctb.2020.03.046

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Effects of Combined Application of Super Absorbent Polymer and Microbial Fertilizer on Oat Growth and Water Utilization in Dry Farmland of Loess Plateau

- Effects of Combined Application of Super Absorbent Polymer and Microbial Fertilizer on Oat Growth and Water Utilization in Dry Farmland of Loess Plateau
- Bulletin of Soiland Water Conservation Vol. 40, Issue 3, Pages: 317-324(2020)
- 作者机构：
  
  内蒙古农业大学/内蒙古农业大学杂粮产业协同创新中心,内蒙古,呼和浩特,010019
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2020.03.046
  CLC： TU582.042.6;S144
- Published：2020
- 稿件说明：
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Tian Lu, Liu Jinghui, Zhao Baoping, et al. Effects of Combined Application of Super Absorbent Polymer and Microbial Fertilizer on Oat Growth and Water Utilization in Dry Farmland of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2020, 40(3): 317-324.
DOI：

Tian Lu, Liu Jinghui, Zhao Baoping, et al. Effects of Combined Application of Super Absorbent Polymer and Microbial Fertilizer on Oat Growth and Water Utilization in Dry Farmland of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2020, 40(3): 317-324. DOI： 10.13961/j.cnki.stbctb.2020.03.046.

摘要

[目的] 分析保水剂与微生物菌肥配施后旱作燕麦生长及水分利用情况，为黄土高原旱作区农田生产提供一种有效的保水培肥措施，指导该区域旱作农业生产。[方法] 通过在黄土高原旱作区设不施保水剂和微生物菌肥（CK）、单施保水剂（A）、单施微生物菌肥（M）、保水剂和生物菌肥配施（AM）4个处理，分析燕麦全生育时期土壤水分变化、关键生育时期生长发育变化、全生育时期耗水量特征、产量构成及水分利用情况。[结果] ①AM处理可促进燕麦生长发育。以灌浆期为例，AM处理可提高株高3.27%~25.96%，单株叶面积7.94%~23.06%，地上部干物质积累量11.48%~21.88%。②AM处理可提高0—20 cm土层土壤含水量（5.89%~11.50%），显著降低燕麦土壤贮水消耗（7.70%~18.76%），使总耗水量降低0.46%~1.26%。③AM处理可促进燕麦籽粒和生物产量形成，进而促进水分利用，使籽粒产量提高8.40%~20.12%，生物产量提高10.80%~25.09%，水分利用效率提高12.19%~26.80%。[结论] 保水剂和微生物菌肥配施能够显著促进旱作燕麦生长，改善农田土壤水分状况，具有蓄水保墒作用，实现燕麦产量增加，提高水分利用效率。

Abstract

[Objective] The growth and water utilization of dry farmland oats after the combined application of super absorbent polymer and microbial fertilizer were investigated

in order to provide an effective water-retaining and fertilizing measure for the crop production in Inner Mongolia of the Loess Plateau.[Methods] Four treatments

including no application of water retaining agent and microbial fertilizer (CK)

single application of water retaining agent (A)

single application of microbial fertilizer (M)

combination of water retaining agent and microbial fertilizer (AM)

were set up in the dryland area of the Loess Plateau

and the changes of soil water content

oat growth conditions

water consumption

yield composition and water use were analyzed.[Results] ① The combined application of super absorbent polymer and microbial fertilizer promoted the growth and development of oats. Taking the filling stage as an example

the plant height was increased by 3.27%-25.96%

the plant leaf-area was increased by 7.94%-23.06%

and the accumulation of aboveground dry matter was increased by 11.48%-21.88%. ② The combined application of super absorbent polymer and microbial fertilizer increased soil water content of 0-20 cm soil layer by 5.89%-11.50%

compared with no application. It significantly decreased soil water storage consumption by 7.70%-18.76% and reduced the total water consumption by 0.46%-1.26%. ③ The combined application of super absorbent polymer and microbial fertilizer promoted the formation of oat grains and biological yield

and thus promoted water use efficiency. The grain yield increased by 8.40%-20.12%

the biological yield increased by 10.80%-25.09%

and water use efficiency increased by 12.19%-26.80%.[Conclusion] The combined application of super absorbent polymer and microbial fertilizer can significantly promote the growth of oats in dryland

improve soil moisture status

conserve soil and water

and thus increase the yield of oats and improve the water use efficiency.

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