Crops ›› 2018, Vol. 34 ›› Issue (6): 138-143.doi: 10.16035/j.issn.1001-7283.2018.06.021

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Effects of a New Soil Ameliorants on Soil Physical Properties and Yield of Rice in Saline Meadow Soil

Zhao Jinxing1,Zhou Wei2,Zhan Yingce1,Li Yongjie2,Gao Hongbo2,He Songyu1,Zhang Yuxian1,Zhang Mingcong1   

  1. 1 College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang, China
    2 Daqing Qilong Agricultural Science and Technology Limited Company, Daqing 163000, Heilongjiang, China
  • Received:2018-06-15 Revised:2018-08-27 Online:2018-12-15 Published:2018-12-06

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Abstract:

The effects of saline meadow soil modifier on soil physical properties and yield of rice were studied by both pot and field experiment. The results of pot test were compared, the irrigation improver treatment (T2) significantly increased the electrical conductivity of soil, reduced soil exchangeable sodium content, pH and soil moisture content than that of the pouring water treatment (T1). T2 also increased the mass percentage and organic carbon content of water stable aggregates of different grain size in soil. The field contrast test showed that the application of modifier in 4 test sites could significantly increase the green returning rate of rice, the number of grains per ear and yield per hectare, increases were 83.7%-87.4% (P<0.01), 40.4%-98.3% (P<0.01) and 293.0%-411.2% (P<0.01), respectively, compared with irrigation treatment.Based on the above analyses, the application of soil improver could improve the physical properties of saline meadow soil, increase the rice yield and thereby increase the income for growers.

Key words: Saline meadow soil, Soil ameliorants, Rice, Yield, Physical properties

Table 1

Soil foundation fertility of 0~20cm"

地点
Test site		 速效磷(mg/kg)
Olsen-P		 速效钾(mg/kg)
Available K		 有机质(g/kg)
Organic matter		 pH 电导率(μs/cm)
Electrical conductivity
校内盆栽基地Pot base on campus 17.8 135.3 22.6 9.07 1 651
杜蒙县敖林西伯乡Aolinxibo, Dumeng 25.1 148.2 19.1 9.25 1 856
杜蒙县新兴村Xinxing, Dumeng 23.2 155.1 17.9 9.36 1 791
大同区双榆树乡Shuangyushu, Datong 12.6 101.3 18.5 9.23 1 781
白城市通榆县Tongyu, Baicheng 15.4 99.8 23.4 9.09 1 661

Fig.1

Effects of soil modifier on soil electrical conductivity Different uppercase represent significant difference at 0.01 level. The same below"

Fig.2

Effects of soil modifier on soil exchangeable sodium content"

Fig.3

Effects of soil modifier on soil pH"

Fig.4

Effects of soil modifier on soil moisture content"

Table 2

Effects of soil modifier on soil water stable aggregate content"

返青后天数(d)
Days after regreening		 处理
Treatment		 各粒级水稳性团聚体的质量百分比Proportion of different water stable aggregate size (%)
>5.00mm 2.01~5.00mm 1.01~2.00mm 0.51~1.00mm 0.25~0.50mm ≥0.25mm
10 T1 1.27 2.45 2.26 2.21 1.80 9.98
T2 21.92 4.05 15.85 14.00 19.36 75.19
20 T1 1.84 2.14 2.10 2.38 8.02 16.48
T2 17.79 10.96 20.55 11.00 19.26 79.56
30 T1 2.67 3.91 5.85 3.39 3.04 18.86
T2 12.80 7.38 11.13 8.22 19.02 58.55
40 T1 2.62 5.72 7.00 5.11 3.90 24.35
T2 10.20 6.61 14.37 5.35 18.63 55.16

Table 3

Effects of soil modifier on organic carbon content of soil aggregates"

返青后天数(d)
Days after regreening		 处理
Treatment		 土壤有机碳含量Soil organic carbon content (g/kg)
>5.00mm 2.01~5.00mm 1.01~2.00mm 0.51~1.00mm 0.25~0.50mm
10 T1 3.70 2.99 6.56 6.42 5.23
T2 4.18 3.11 7.70 7.33 6.29
20 T1 4.92 1.38 5.62 6.36 9.48
T2 5.24 3.54 7.14 7.57 11.25
30 T1 7.49 5.67 8.55 2.60 8.52
T2 9.83 7.97 10.41 5.07 9.61
40 T1 6.79 1.14 5.14 3.23 8.11
T2 7.23 2.83 10.19 3.79 9.21

Table 4

Effects of soil modifier on rice yield and yield composition of pot culture"

处理
Treatment		 每盆穴数
Hills per pot		 每穴分蘖数
Tillers per hill		 穗粒数
Grains per panicle		 千粒重(g)
1000-grain weight		 结实率(%)
Seed setting rate		 每盆产量(g)
Yield per pot
T1 3Aa 13.9Bb 40.5Bb 19.1Aa 67.1Bb 21.64Bb
T2 3Aa 18.5Aa 56.7Aa 20.4Aa 78.4Aa 50.33Aa

Table 5

Effects of soil modifier on rice yield and yield composition of field culture"

试验地点
Test site		 返青穴数
Turn green hills per m2		 每穴分蘖数
Tillers per hill		 穗粒数
Grains per panicle		 千粒重(g)
1000-grain weight		 结实率(%)
Seed setting rate		 产量(kg/km2)
Yield
对照田CK 13.5Bb 13.5Cc 41.6Cc 19.3Ab 71.2Bc 1 042.4Cc
杜蒙县敖林西伯乡Aolinxibo, Dumeng 24.8Aa 15.1Bb 82.5Aa 21.1Aa 79.2ABb 5 155.6Aa
杜蒙县新兴村Xinxing, Dumeng 24.9Aa 16.6ABb 58.4Bb 21.1Aa 80.4Aab 4 097.1Bb
白城市通榆县Tongyu, Baicheng 25.2Aa 19.2Aa 61.8Bb 20.5Aab 83.5Aa 5 110.9Aa
大同区双榆树乡Shuangyushu, Datong 25.3Aa 18.9Aa 61.7Bb 21.6Aa 83.7Aa 5 329.2Aa

Table 6

Benefit analysis"

试验地点Test site 产量(kg/km2)
Yield		 改良剂投入(元/km2)
Soil modifier input		 增产(kg/km2)
Increase yield		 增效(元/km2)
Increase benefit
对照田CK 1 042.4 — — —
杜蒙县敖林西伯乡Aolinxibo, Dumeng 5 155.6 1 200 4 113.2 11 139.6
杜蒙县新兴村Xinxing, Dumeng 4 097.1 1 200 3 054.7 7 964.1
白城市通榆县Tongyu, Baicheng 5 110.9 1 200 4 068.5 11 060.4
大同区双榆树乡Shuangyushu, Datong 5 329.2 1 200 4 286.8 11 660.4
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