Effect of Pipe Drainage on Scale Farmland Rice Nutrient Absorption and Yield Composition

doi:10.11924/j.issn.1000-6850.casb2020-0496

Abstract

Abstract:

To explore the effect of underground pipe drainage on the absorption of nitrogen, phosphorus and potassium and yield components of rice plants at later stages of growth, ‘Nanjing 46’ was used as the test material, an experiment was conducted in two adjacent field blocks of underground pipe drainage and traditional open ditch drainage in Taicang Donglin Farm of Suzhou City. Rice samples were collected at different locations from the ditch (seedling ditch spacing) and different locations from the pipe (seedling pipe spacing) in the underground pipe drainage field block and the sampling of the traditional open ditch drainage field block was used as a control, to analyze the difference of the nitrogen, phosphorus and potassium content and the yield composition of the rice plants at the jointing booting stage, long earing stage and mature stage. The results showed that: with the increase of the seedling ditch spacing, the absorption of nitrogen, phosphorus and potassium of rice plants had a tendency to decrease, and the area closer to the drainage ditch had the most significant effect. The nitrogen, phosphorus and potassium content and yield of each organ of the rice plant at the seedling pipe spacing of 2.5 m were the highest. Compared with the control group, the absorption of nitrogen, phosphorus and potassium in different organs of rice could have a maximum increase by 25.17%, 80.16%, and 35.19%, respectively. The yield reached 9.97 t/hm² when the seedling ditch spacing was 15 m and the seedling pipe spacing was 2.5 m, which was 15.22% greater than the control group. The difference in yield was mainly caused by the number of grains per spike, seed setting rate and thousand-grain weight of the rice population. Underground pipe drainage could effectively increase the absorption of nitrogen, phosphorus and potassium in paddy field and increase part yield, but free underground pipe drainage might cause the loss of surface soil nutrients directly above the underground pipes and affect the absorption of nitrogen, phosphorus and potassium in rice plants, and the law of nitrogen, phosphorus and potassium absorption should be further analyzed in the later stage in combination with the relationship between soil leakage intensity or leakage amount and soil nutrient content.

Key words: rice, pipe drainage, seedling pipe spacing, seedling ditch spacing, nutrient absorption, yield omposition

CLC Number:

S276.3

Jiang Lingjie, Dong Linlin, Fan Peng, Cao Yifan, Zhou Zhengping, Shen Xinping, Lu Changying, Shen Mingxing. Effect of Pipe Drainage on Scale Farmland Rice Nutrient Absorption and Yield Composition[J]. Chinese Agricultural Science Bulletin, 2021, 37(17): 105-111.

Figures/Tables 7

References 29

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处理	孕穗期		抽穗期		成熟期
处理	茎	叶	茎	叶	茎	叶	穗
A₁B₁	7.46±0.45abcd	5.96±0.35bc	7.57±0.26abc	6.27±0.31abc	1.82±0.03abc	1.14±0.02ab	2.82±0.14abc
A₁B₂	7.18±0.39abc	5.68±0.22abc	7.01±0.23ab	6.05±0.34abc	1.57±0.1abc	1.12±0.03ab	2.61±0.16ab
A₁B₃	6.9±0.34ab	5.58±0.190ab	6.5±0.17a	5.75±0.35ab	1.57±0.15abc	1.06±0.03a	2.53±0.2a
A₂B₁	8.73±0.11e	6.74±0.25c	9.83±0.71c	7.31±0.17c	2.27±0.12c	1.26±0.06b	4.18±0.12e
A₂B₂	8.48±0.13de	6.56±0.23bc	9.32±0.79ab	7.01±0.21bc	2.15±0.09c	1.19±0.03ab	4.01±0.05e
A₂B₃	8.22±0.11cde	5.84±0.28bc	8.74±0.75abc	6.41±0.35abc	2.09±0.07bc	1.21±0.03ab	3.85±0.05de
A₃B₁	8.01±0.12bcde	6.08±0.14bc	8.75±0.58abc	6.81±0.21bc	1.78±0.32abc	1.17±0.04ab	3.63±0.19cde
A₃B₂	7.62±0.11abcde	6.06±0.17bc	8.05±0.53abc	6.54±0.23abc	1.5±0.23abc	1.12±0.02ab	3.36±0.26bcde
A₃B₃	7.39±0.06abcd	5.86±0.16bc	7.31±0.44abc	6.41±0.17abc	1.32±0.19ab	1.13±0.03ab	3.16±0.2abcd
CK	6.69±0.04a	4.62±0.20a	6.46±0.09a	5.46±0.16a	1.26±0.01a	1.05±0.03a	2.49±0.14a
苗管距	24.57^**	5.77^**	13.23^**	8.42^**	12.41^**	9.10^**	50.43^**
苗沟距	3.66^*	3.66^*	3.68^*	3.85^*	2.47	2.55	3.64^*
苗管距×苗沟距	0.20	0.80	0.04	0.30	0.21	0.53	0.09

处理	孕穗期		抽穗期		成熟期
处理	茎	叶	茎	叶	茎	叶	穗
A₁B₁	7.46±0.45abcd	5.96±0.35bc	7.57±0.26abc	6.27±0.31abc	1.82±0.03abc	1.14±0.02ab	2.82±0.14abc
A₁B₂	7.18±0.39abc	5.68±0.22abc	7.01±0.23ab	6.05±0.34abc	1.57±0.1abc	1.12±0.03ab	2.61±0.16ab
A₁B₃	6.9±0.34ab	5.58±0.190ab	6.5±0.17a	5.75±0.35ab	1.57±0.15abc	1.06±0.03a	2.53±0.2a
A₂B₁	8.73±0.11e	6.74±0.25c	9.83±0.71c	7.31±0.17c	2.27±0.12c	1.26±0.06b	4.18±0.12e
A₂B₂	8.48±0.13de	6.56±0.23bc	9.32±0.79ab	7.01±0.21bc	2.15±0.09c	1.19±0.03ab	4.01±0.05e
A₂B₃	8.22±0.11cde	5.84±0.28bc	8.74±0.75abc	6.41±0.35abc	2.09±0.07bc	1.21±0.03ab	3.85±0.05de
A₃B₁	8.01±0.12bcde	6.08±0.14bc	8.75±0.58abc	6.81±0.21bc	1.78±0.32abc	1.17±0.04ab	3.63±0.19cde
A₃B₂	7.62±0.11abcde	6.06±0.17bc	8.05±0.53abc	6.54±0.23abc	1.5±0.23abc	1.12±0.02ab	3.36±0.26bcde
A₃B₃	7.39±0.06abcd	5.86±0.16bc	7.31±0.44abc	6.41±0.17abc	1.32±0.19ab	1.13±0.03ab	3.16±0.2abcd
CK	6.69±0.04a	4.62±0.20a	6.46±0.09a	5.46±0.16a	1.26±0.01a	1.05±0.03a	2.49±0.14a
苗管距	24.57^**	5.77^**	13.23^**	8.42^**	12.41^**	9.10^**	50.43^**
苗沟距	3.66^*	3.66^*	3.68^*	3.85^*	2.47	2.55	3.64^*
苗管距×苗沟距	0.20	0.80	0.04	0.30	0.21	0.53	0.09

处理	孕穗期		抽穗期		成熟期
处理	茎	叶	茎	叶	茎	叶	穗
A₁B₁	31.09±2.2abc	21.51±0.58abc	18.03±0.26abc	13.85±0.6a	16.20±0.25abc	7.00±0.06ab	4.79±0.24abcd
A₁B₂	28.59±0.82ab	20.63±0.55ab	17.27±0.34ab	13.00±0.32a	15.67±0.34ab	6.78±0.14ab	4.43±0.18ab
A₁B₃	27.98±0.89a	19.98±0.58a	15.93±0.44a	13.51±0.61a	15.27±0.32a	6.52±0.18a	4.21±0.20a
A₂B₁	35.7±1.68c	25.22±0.65d	22.32±1.29d	16.80±0.08b	17.82±0.46d	8.17±0.05c	5.46±0.01d
A₂B₂	34.25±1.16bc	24.47±0.81cd	21.41±1.32cd	15.36±0.64ab	17.42±0.46cd	7.82±0.06abc	5.30±0.06cd
A₂B₃	33.18±1.02abc	23.87±0.87bcd	20.43±1.35bcd	13.99±0.3a	17.03±0.51bcd	7.73±0.14abc	5.20±0.03bcd
A₃B₁	31.77±1.24abc	23.31±1.03abcd	18.48±0.78abcd	14.94±0.34ab	16.8±0.08abcd	7.81±0.12abc	5.23±0.13cd
A₃B₂	29.98±0.99abc	21.93±0.74abcd	17.88±0.59abc	14.02±0.27a	16.35±0.1abcd	7.45±0.15abc	5.02±0.21bcd
A₃B₃	28.75±0.35ab	21.29±0.7abc	16.79±0.35ab	15.01±1.04ab	16.02±0.14ab	7.13±0.52abc	4.85±0.12abcd
CK	28.54±0.49ab	20.21±0.3a	16.51±0.18ab	13.46±0.24a	15.66±0.21abcd	6.80±0.36ab	4.67±0.18abc
苗管距	14.339^**	20.324^**	21.849^**	13.198^**	20.186^**	22.527^**	23.984^**
苗沟距	4.099^*	3.743^*	3.665^*	3.851^*	4.73^*	0.943	5.496^*
苗管距×苗沟距	0.052	0.071	0.023	2.375	0.019	0.136	0.27

处理	孕穗期		抽穗期		成熟期
处理	茎	叶	茎	叶	茎	叶	穗
A₁B₁	31.09±2.2abc	21.51±0.58abc	18.03±0.26abc	13.85±0.6a	16.20±0.25abc	7.00±0.06ab	4.79±0.24abcd
A₁B₂	28.59±0.82ab	20.63±0.55ab	17.27±0.34ab	13.00±0.32a	15.67±0.34ab	6.78±0.14ab	4.43±0.18ab
A₁B₃	27.98±0.89a	19.98±0.58a	15.93±0.44a	13.51±0.61a	15.27±0.32a	6.52±0.18a	4.21±0.20a
A₂B₁	35.7±1.68c	25.22±0.65d	22.32±1.29d	16.80±0.08b	17.82±0.46d	8.17±0.05c	5.46±0.01d
A₂B₂	34.25±1.16bc	24.47±0.81cd	21.41±1.32cd	15.36±0.64ab	17.42±0.46cd	7.82±0.06abc	5.30±0.06cd
A₂B₃	33.18±1.02abc	23.87±0.87bcd	20.43±1.35bcd	13.99±0.3a	17.03±0.51bcd	7.73±0.14abc	5.20±0.03bcd
A₃B₁	31.77±1.24abc	23.31±1.03abcd	18.48±0.78abcd	14.94±0.34ab	16.8±0.08abcd	7.81±0.12abc	5.23±0.13cd
A₃B₂	29.98±0.99abc	21.93±0.74abcd	17.88±0.59abc	14.02±0.27a	16.35±0.1abcd	7.45±0.15abc	5.02±0.21bcd
A₃B₃	28.75±0.35ab	21.29±0.7abc	16.79±0.35ab	15.01±1.04ab	16.02±0.14ab	7.13±0.52abc	4.85±0.12abcd
CK	28.54±0.49ab	20.21±0.3a	16.51±0.18ab	13.46±0.24a	15.66±0.21abcd	6.80±0.36ab	4.67±0.18abc
苗管距	14.339^**	20.324^**	21.849^**	13.198^**	20.186^**	22.527^**	23.984^**
苗沟距	4.099^*	3.743^*	3.665^*	3.851^*	4.73^*	0.943	5.496^*
苗管距×苗沟距	0.052	0.071	0.023	2.375	0.019	0.136	0.27

处理	穗数/(×10⁴ hm²)	穗粒数/粒	结实率/%	千粒重/g	产量/(t/hm²)
A1B1	319.02±18.39a	112.19±4.07a	91.33±0.01d	27.84±0.08c	8.65±0.01ab
A1B2	316.77±27.24a	123.29±6.75ab	83.33±0.01ab	25.95±0.65abc	8.34±0.20ab
A1B3	359.46±17.97a	114.22±8.74a	81.00±0.01a	24.82±0.28a	7.72±0.33a
A2B1	314.54±13.68a	142.84±4.1b	92.67±0.01d	27.63±0.04bc	9.97±0.32c
A2B2	325.78±16.22a	142.81±1.01b	84.67±0.01abc	25.89±0.64abc	9.45±0.29bc
A2B3	283.07±7.783a	138.79±0.62ab	84.33±0.02abc	25.68±0.47ab	8.39±0.04ab
A3B1	323.49±15.55a	126.33±5.07ab	89.00±0.01cd	27.35±0.1bc	9.48±0.25bc
A3B2	330.23±7.78a	129.67±5.18ab	82.00±0.01a	25.67±0.55ab	8.73±0.16ab
A3B3	312.25±25.01a	130.47±5.37ab	79.67±0.01a	25.33±0.3a	8.02±0.14a
CK	343.73±20.59a	112.41±8.38a	88.67±0.01bcd	25.9±0.17abc	8.87±0.28abc
苗管距	1.36	11.83^**	7.65^**	4.90^*	9.37^**
苗沟距	0.10	0.65	59.73^**	28.23^**	21.71^**
苗管距×苗沟距	1.71	0.41	0.36	0.65	0.88