Crops ›› 2024, Vol. 40 ›› Issue (2): 122-128.doi: 10.16035/j.issn.1001-7283.2024.02.015

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Study on the Growth-Promoting Effect of Lactic Acid Bacteria Compound Preparation on Oat

Sun Yueying(), Liu Jinghui(), Mi Junzhen, Zhao Baoping, Li Yinghao, Zhu Shanshan   

  1. College of Agriculture, Inner Mongolia Agricultural University, Hohhot 010019, Inner Mongolia, China
  • Received:2022-12-12 Revised:2023-01-17 Online:2024-04-15 Published:2024-04-15

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Abstract:

In order to investigate the growth-promoting effect of lactic acid bacteria compound preparation on the actual production of oat, field tests were carried out simultaneoussly in the dryland area at the north foot of Yin Mountain and in the loess hilly area in 2021. Four treatments including conventional fertilization (A), conventional fertilization + lactic acid bacteria compound preparation (AB), single application of lactic acid bacteria compound preparation (B) and no fertilization (CK) were set up to study the effects of different treatments on the emergence rates, morphological indexes, dry matter accumulation and yields of oat. The results demonstrated that, in the two test sites, the various treatments displayed the same tendency. In comparison to CK, the dry farming area of loess hill experienced a greater rise in the seedling emergence rate, plant height, stem diameter, leaf area, and dry matter accumulation of oat under AB treatment. Similarly, compared with CK, AB treatment significantly increased the spike length, grain weight per spike, grain number per spike, 1000-grain weight, biological yield and grain yield of oat in the two test sites, and the effect was the best in the dry farming area of loess Hill. The oat yields in both test sites exhibited noteworthy or highly significant positive correlations with seedling emergence rate, earbearing tiller rate, plant height, stem diameter, leaf area, and dry matter accumulation of aboveground part, furthermore, the yield and characteristics correlation were stronger in the loess hilly dry area, and the characteristics correlation were also significant or extremely significant.

Key words: Oats, Lactic acid bacteria compound preparation, Morphological indexes, Yield

Table 1

Basic physical and chemical properties of soil in 0-20 cm soil layer in the test sites"

试验地
Test site		 全氮
Total nitrogen
(g/kg)		 全磷
Total phosphorus
(g/kg)		 碱解氮
Alkali hydrolyzed
nitrogen (mg/kg)		 全钾
Total potassium
(g/kg)		 有效磷
Available
phosphorus (mg/kg)		 速效钾
Available
potassium (mg/kg)		 有机质
Organic
matter (g/kg)		 pH
试验地一Test site 1 1.36 0.74 76.25 0.52 14.12 112.35 11.69 8.04
试验地二Test site 2 0.64 0.43 37.10 11.58 6.55 118.90 5.96 8.34

Fig.1

Precipitation and accumulated temperature of the two test sites during the test SS: Sowing-seedling stage, SJ: Seedling stage-jointing stage, JH: Jointing stage-heading stage, HF: Heading stage-filling stage, FM: Filling stage-maturity stage."

Table 2

Fertilizer application rate of each treatment in the test sites"

处理Treatment 试验地一Test site 1 试验地二Test site 2
A 复合肥（N-P2O5-K2O=18-18-18）150 kg/hm2 磷酸二铵（N-P2O5-K2O=18-46-0）300 kg/hm2
AB 复合肥（N-P2O5-K2O=18-18-18）150 kg/hm2+15 kg/hm2
乳酸菌复合制剂		 磷酸二铵（N-P2O5-K2O=18-46-0）300 kg/hm2+15 kg/hm2
乳酸菌复合制剂
B 15 kg/hm2乳酸菌复合制剂 15 kg/hm2乳酸菌复合制剂
CK 0 0

Table 3

Oat emergence rates and earbearing tiller rates under different treatments %"

试验地
Test site		 处理
Treatment		 出苗率
Emergence rate		 成穗率
Earbearing tiller rate
试验地一
Test site 1
 CK 81.96±1.70c 85.02±0.84b
A 85.16±2.26ab 86.34±1.61ab
AB 86.89±1.50a 88.29±0.79a
B 82.77±0.60bc 85.29±0.95b
试验地二
Test site 2
 CK 68.39±2.58d 76.29±2.41b
A 75.68±1.40b 78.80±1.23ab
AB 79.42±1.10a 81.38±1.12a
B 72.35±1.05c 76.79±2.29b

Table 4

Effects of different treatments on morphological indexes of oat plants in the two test sites"

试验地Test site 生育时期Growth stage 处理Treatment 株高Plant height (cm) 茎粗Stem diameter (mm) 叶面积Leaf area (cm2)
试验地一
Test site 1		 拔节期 CK 66.17±3.23c 4.18±0.03c 64.98±5.77c
A 72.67±2.27b 4.34±0.13b 74.62±4.17b
AB 79.27±2.06a 4.61±0.16a 80.13±5.01a
B 69.73±3.93bc 4.24±0.08bc 69.91±2.09c
抽穗期 CK 83.83±3.30b 4.34±0.08b 85.81±6.18b
A 94.17±5.55a 4.56±0.16ab 99.09±2.60a
AB 100.17±6.10a 4.79±0.17a 103.13±4.12a
B 95.03±5.45b 4.56±0.18ab 97.83±7.09a
灌浆期 CK 100.50±2.92c 4.62±0.13b 101.77±3.30b
A 111.53±8.03ab 4.81±0.04ab 112.88±3.83ab
AB 114.33±6.11a 4.92±0.09a 120.48±2.04a
B 105.44±1.76bc 4.77±0.14ab 106.73±10.13b
试验地二
Test site 2		 拔节期 CK 38.77±2.67c 3.44±0.13b 39.66±2.68b
A 46.67±4.82ab 3.78±0.27b 49.29±1.00a
AB 48.73±2.10a 4.13±0.11a 58.65±2.95a
B 40.65±3.66bc 3.53±0.09b 43.58±3.24ab
抽穗期 CK 52.20±3.50b 3.54±0.05c 55.37±3.67b
A 61.73±3.44a 3.82±0.12b 71.59±6.04a
AB 63.03±3.91a 4.18±0.12a 79.33±4.34a
B 56.90±1.91ab 3.64±0.07c 60.47±6.52ab
灌浆期 CK 73.50±3.06c 4.15±0.04a 75.07±4.71c
A 79.83±2.05ab 4.26±0.04a 84.26±8.20b
AB 85.27±3.38a 4.64±0.12a 92.38±6.25a
B 76.77±4.74c 4.21±0.04a 81.72±2.53ab

Fig.2

Dynamic changes of aboveground dry matter accumulation in oat under different treatments The different lowercase letters indicate significant difference at 0.05 level."

Table 5

Oat yield and its compositions under different treatments in the two test sites"

试验地
Test site		 处理
Treatment		 穗长
Spike length
(cm)		 千粒重
1000-grain
weight (g)		 穗粒数
Grain number
per spike		 穗粒重
Grain weight
per spike (g)		 籽粒产量
Grain yield
(kg/hm2)		 生物产量
Biological yield
(kg/hm2)
试验地一
Test site 1		 CK 17.50±0.98c 28.50±0.56b 78.67±4.04c 2.29±0.15b 4132.43±145.90c 12 948.84±715.64c
A 22.03±2.12b 30.40±0.79a 108.33±6.43b 3.17±0.27a 4554.34±131.82ab 15 341.85±1224.83b
AB 25.10±1.77a 30.87±0.25a 120.00±5.57a 3.32±0.17a 4754.34±131.82a 17 404.05±890.97a
B 18.80±1.18c 29.70±0.89ab 85.00±7.21c 2.50±0.10b 4297.13±168.49bc 14 185.57±502.92bc
试验地二
Test site 2		 CK 16.70±0.50c 25.40±1.11b 53.00±8.19c 1.19±0.14c 2480.59±120.16b 8718.75±336.52c
A 19.67±0.93ab 26.13±0.55ab 71.33±7.64b 1.85±0.23ab 3019.68±234.06a 11 198.35±732.15b
AB 21.10±0.37a 27.57±1.20a 86.67±10.07a 2.08±0.24a 3279.23±197.93a 13 484.27±566.49a
B 18.57±1.06b 25.80±0.53ab 62.67±6.03bc 1.55±0.10ab 2645.82±189.87b 9825.41±197.77c

Table 6

Correlation analysis between yield and main traits under different treatments"

试验地
Test site		 性状
Trait		 生物产量
Biological
yield		 籽粒产量
Grain
yield		 出苗率
Emergence
rate		 成穗率
Earbearing
tiller rate		 株高
Plant
height		 茎粗
Stem
diameter		 叶面积
Leaf
area		 地上部干物质积累量
Dry matter accumulation
of aboveground part
试验地一
Test site 1		 生物产量 1.000
籽粒产量 0.874** 1.000
出苗率 0.674* 0.725** 1.000
成穗率 0.691* 0.656* 0.779** 1.000
株高 0.694* 0.717** 0.709** 0.739** 1.000
茎粗 0.674* 0.632* 0.677* 0.652* 0.692* 1.000
叶面积 0.851** 0.784** 0.628* 0.756** 0.773** 0.465 1.000
地上部干物质积累量 0.833** 0.865** 0.754** 0.870** 0.708** 0.678* 0.782** 1.000
试验地二
Test site 2		 生物产量 1.000
籽粒产量 0.816** 1.000
出苗率 0.920** 0.797** 1.000
成穗率 0.807** 0.671* 0.809** 1.000
株高 0.811** 0.836** 0.856** 0.851** 1.000
茎粗 0.924** 0.741** 0.802** 0.729** 0.734** 1.000
叶面积 0.866** 0.502 0.820** 0.585* 0.554 0.762** 1.000
地上部干物质积累量 0.884** 0.938** 0.805** 0.707* 0.753** 0.810** 0.590* 1.000
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