新疆农业科学 ›› 2023, Vol. 60 ›› Issue (10): 2380-2389.DOI: 10.6048/j.issn.1001-4330.2023.10.005
丁宇1(), 张江辉2(), 白云岗2, 赵经华1, 郑明2, 刘洪波2, 肖军2, 韩政宇1
收稿日期:
2023-01-20
出版日期:
2023-10-20
发布日期:
2023-11-01
通信作者:
张江辉(1963-),男,陕西兴平人,研究员,研究方向为农田水分高效利用,(E-mail)作者简介:
丁宇(1998-),男,河南新乡人,硕士研究生,研究方向为节水灌溉技术,(E-mail)dy98206@126.com
基金资助:
DING Yu1(), ZHANG Jianghui2(), BAI Yungang2, ZHAO Jinghua1, ZHENG Ming2, LIU Hongbo2, XIAO Jun2, HAN Zhengyu1
Received:
2023-01-20
Online:
2023-10-20
Published:
2023-11-01
Correspondence author:
ZHANG Jianghui (1963 -), male, from Xingping, Shaanxi Province, researcher, research direction: efficient utilization of farmland water, (E-mail) Supported by:
摘要:
【目的】 研究适合双膜覆盖条件下棉花干播湿出的灌溉方案。【方法】 在新疆阿克苏市沙雅县设置大田试验,设计3个灌水定额处理(S1:675 m3/hm2,S2:900 m3/hm2,S3:1 125 m3/hm2)、2个滴水频次处理(S4:675 m3/hm2+450 m3/hm2,S5:675 m3/hm2+300 m3/hm2+150 m3/hm2)和1个冬灌对照处理(CK:2 700 m3/hm2),共6个处理。分析不同灌溉定额及滴水频次对土壤水盐运移、水热效应及出苗率的影响。【结果】 (1)在0~40 cm土层,滴水频次相同,随灌水定额增加土壤平均含水率逐渐增加,表现为S1<S2<S3;灌水定额相同,随滴水频次增加土壤平均含水率逐渐增加,表现为S5>S4>S3;CK处理土壤平均含水率显著小于各干播湿出处理。(2)0~40 cm土层,滴水频次相同,灌水定额越大灌后土壤脱盐率越高;灌水定额相同,滴水频次越少,土壤脱盐率越高;CK处理脱盐率显著大于各干播湿出处理。(3)0~40 cm土层,滴水频次相同,随灌水定额增加土壤日均温度逐渐减小,表现为S1>S2>S3;灌水定额相同,随滴水频次增加土壤日均温度逐渐降低,表现为S3>S4>S5;CK处理土壤日均温度与S1处理无明显差异,且显著大于其余各干播湿出处理。(4)出苗率随灌水定额的减少而升高,随滴水频次的减少而降低。各处理出苗率表现为CK≈S1>S2≈S5>S4>S3。【结论】 综合各处理土壤水盐、地温及出苗情况,S1(675 m3/hm2)为最佳出苗水处理。
中图分类号:
丁宇, 张江辉, 白云岗, 赵经华, 郑明, 刘洪波, 肖军, 韩政宇. 不同水分处理干播湿出水热盐效应对棉花出苗率的影响[J]. 新疆农业科学, 2023, 60(10): 2380-2389.
DING Yu, ZHANG Jianghui, BAI Yungang, ZHAO Jinghua, ZHENG Ming, LIU Hongbo, XIAO Jun, HAN Zhengyu. Study on the effects of different water treatments on the emergence rate of cotton[J]. Xinjiang Agricultural Sciences, 2023, 60(10): 2380-2389.
土壤物理性质 Physical properties of soil | 深度Depth(cm) | ||||||
---|---|---|---|---|---|---|---|
0~10 | 10~20 | 20~30 | 30~40 | 40~60 | 60~80 | 80~100 | |
干容重 Dry bulk density(g/cm3) | 1.57 | 1.63 | 1.65 | 1.61 | 1.6 | 1.56 | 1.45 |
田间持水率(体积含水率) Field water holding capacity(%) | 25.50 | 25.33 | 26.41 | 23.51 | 21.9 | 21.91 | 8.28 |
土壤含盐量 Soil salt content(g/kg) | 1.87 | 1.71 | 2.18 | 1.47 | 1.22 | 0.75 | 0.58 |
土壤体积含水率 Soil volume moisture content(%) | 13.57 | 16.40 | 17.70 | 16.91 | 16.06 | 14.95 | 14.93 |
表1 灌前土壤理化性质
Tab.1 Physical and chemical properties of soil before irrigation
土壤物理性质 Physical properties of soil | 深度Depth(cm) | ||||||
---|---|---|---|---|---|---|---|
0~10 | 10~20 | 20~30 | 30~40 | 40~60 | 60~80 | 80~100 | |
干容重 Dry bulk density(g/cm3) | 1.57 | 1.63 | 1.65 | 1.61 | 1.6 | 1.56 | 1.45 |
田间持水率(体积含水率) Field water holding capacity(%) | 25.50 | 25.33 | 26.41 | 23.51 | 21.9 | 21.91 | 8.28 |
土壤含盐量 Soil salt content(g/kg) | 1.87 | 1.71 | 2.18 | 1.47 | 1.22 | 0.75 | 0.58 |
土壤体积含水率 Soil volume moisture content(%) | 13.57 | 16.40 | 17.70 | 16.91 | 16.06 | 14.95 | 14.93 |
处理 Handle | 灌溉 定额 Irrigation quota (m3/hm2) | 滴水 频次 Drip frequ- ency | 每次灌水定额 Irrigation quota per time (m3/hm2) | 灌水时间 Irrigation time (月/日) |
---|---|---|---|---|
S1 | 675 | 1 | 675 | 4/19 |
S2 | 900 | 1 | 900 | 4/19 |
S3 | 1 125 | 1 | 1 125 | 4/19 |
S4 | 1 125 | 2 | 675+450 | 4/19、4/22 |
S5 | 1 125 | 3 | 675+300+150 | 4/19、4/22、4/25 |
表2 试验设计
Tab.2 Test design
处理 Handle | 灌溉 定额 Irrigation quota (m3/hm2) | 滴水 频次 Drip frequ- ency | 每次灌水定额 Irrigation quota per time (m3/hm2) | 灌水时间 Irrigation time (月/日) |
---|---|---|---|---|
S1 | 675 | 1 | 675 | 4/19 |
S2 | 900 | 1 | 900 | 4/19 |
S3 | 1 125 | 1 | 1 125 | 4/19 |
S4 | 1 125 | 2 | 675+450 | 4/19、4/22 |
S5 | 1 125 | 3 | 675+300+150 | 4/19、4/22、4/25 |
处理 Handle | 深度 Depth (cm) | 平均含水率 Average moisture content (%) | 标准偏差 Standard deviation | P |
---|---|---|---|---|
S1 | 0~40 | 22.132cE | 0.492 | <0.001 |
S2 | 24.676bD | 0.576 | ||
S3 | 27.894aC | 0.654 | ||
S4 | 29.662B | 0.505 | ||
S5 | 31.897A | 0.335 | ||
CK | 21.883cE | 0.472 |
表3 各处理出苗期0~40 cm土壤平均含水率
Tab.3 Average soil moisture content of 0-40 cm in seedling emergence stage of each treatment
处理 Handle | 深度 Depth (cm) | 平均含水率 Average moisture content (%) | 标准偏差 Standard deviation | P |
---|---|---|---|---|
S1 | 0~40 | 22.132cE | 0.492 | <0.001 |
S2 | 24.676bD | 0.576 | ||
S3 | 27.894aC | 0.654 | ||
S4 | 29.662B | 0.505 | ||
S5 | 31.897A | 0.335 | ||
CK | 21.883cE | 0.472 |
处理 Handle | 土层平均含盐量 Average salt content of soil layer(g/kg) | 平均 脱盐率 Average desalination rate (%) | P | ||
---|---|---|---|---|---|
初始 Initial | 灌水结束 End of irrigation | 变化量 Variation | |||
S1 | 1.81 | 1.13 | 0.67 | 36.72dE | <0.001 |
S2 | 0.92 | 0.88 | 48.75cC | ||
S3 | 0.70 | 1.11 | 60.62bB | ||
S4 | 1.03 | 0.77 | 42.65D | ||
S5 | 1.22 | 0.59 | 32.30F | ||
CK | 0.49 | 1.32 | 72.40aA |
表4 灌后0~40 cm土层各处理土壤脱盐率
Tab.4 Soil desalination rate of 0-40 cm soil layer after irrigation
处理 Handle | 土层平均含盐量 Average salt content of soil layer(g/kg) | 平均 脱盐率 Average desalination rate (%) | P | ||
---|---|---|---|---|---|
初始 Initial | 灌水结束 End of irrigation | 变化量 Variation | |||
S1 | 1.81 | 1.13 | 0.67 | 36.72dE | <0.001 |
S2 | 0.92 | 0.88 | 48.75cC | ||
S3 | 0.70 | 1.11 | 60.62bB | ||
S4 | 1.03 | 0.77 | 42.65D | ||
S5 | 1.22 | 0.59 | 32.30F | ||
CK | 0.49 | 1.32 | 72.40aA |
处理 Handle | 深度 Depth (cm) | 土壤日均温度 Daily average soil temperature (℃) | 标准偏差 Standard deviation | P |
---|---|---|---|---|
S1 | 0~40 | 25.343aA | 0.889 | <0.001 |
S2 | 23.673bB | 0.652 | ||
S3 | 21.680cC | 1.149 | ||
S4 | 20.233CD | 0.763 | ||
S5 | 19.313D | 0.672 | ||
CK | 26.322aA | 0.651 |
表5 各处理出苗期0~40 cm土壤日均温度
Tab.5 Daily average temperature of 0-40 cm soil in seedling emergence stage of each treatment
处理 Handle | 深度 Depth (cm) | 土壤日均温度 Daily average soil temperature (℃) | 标准偏差 Standard deviation | P |
---|---|---|---|---|
S1 | 0~40 | 25.343aA | 0.889 | <0.001 |
S2 | 23.673bB | 0.652 | ||
S3 | 21.680cC | 1.149 | ||
S4 | 20.233CD | 0.763 | ||
S5 | 19.313D | 0.672 | ||
CK | 26.322aA | 0.651 |
未标准化系数 Non standardized coefficient | 标准化系数 Standardization coefficient | t | P | ||
---|---|---|---|---|---|
B | 标准错误 Standard error | Beta | |||
常量Constant | 34.537 | 1.788 | 19.318 | <0.001 | |
土壤平均含水率 Average soil moisture content | -0.387 | 0.061 | -0.848 | -6.387 | <0.001 |
R2 | 0.718 | ||||
F | 40.799 | ||||
P | <0.001 | ||||
因变量:土壤日均温度Dependent variable: Daily average soil temperature |
表6 土壤水热变化线性回归
Tab.6 Iinear regression analysis of soil water and heat change
未标准化系数 Non standardized coefficient | 标准化系数 Standardization coefficient | t | P | ||
---|---|---|---|---|---|
B | 标准错误 Standard error | Beta | |||
常量Constant | 34.537 | 1.788 | 19.318 | <0.001 | |
土壤平均含水率 Average soil moisture content | -0.387 | 0.061 | -0.848 | -6.387 | <0.001 |
R2 | 0.718 | ||||
F | 40.799 | ||||
P | <0.001 | ||||
因变量:土壤日均温度Dependent variable: Daily average soil temperature |
图6 各处理出苗率 注:不同字母表示不同处理间差异显著(P<0.05)
Fig.6 Seedling emergence rate of each treatment Note: different letters indicate significant differences among different treatments (P< 0.05)
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