不同地力水平下的小麦施肥效应

doi:10.3864/j.issn.0578-1752.2018.21.007

Abstract

Abstract:

【Objective】The data of 1 247 “3414” field experiments, conducted in Henan Province during 2005-2013, were collected in this paper to evaluate effects of nitrogen (N), phosphorous (P) and potassium (K) fertilizer application on wheat yields, economic benefits and fertilizer use efficiencies under different soil fertilities, aiming to clarify the response of fertilization effect to different soil fertilities, and to provide reference for reasonable fertilizer application. 【Method】The five treatments, including N₀P₀K₀, N₀P₂K₂, N₂P₀K₂, N₂P₂K₀ and N₂P₂K₂, were chosen. According to the wheat grain yield of N₀P₀K₀ treatment, the soil fertilities were classified into four grades: <3.0 t·hm ^-2, 3.0 to 4·5 t·hm ^-2, 4.5 to 6.0 t·hm ^-2, and >6.0 t·hm ^-2. The yield responses to N, P and K fertilizers, gross income, fertilizer profit, input-output ratio, and the agronomic efficiency (AE), partial factor productivity (PFP), the fertilizer contribution rate (FCR) and contribution rate of soil fertilities were also compared. 【Result】Compared with N₀P₀K₀ treatment, the wheat yields with fertilizer application were increased significantly, and the yield increase and yield increase rate showed a significant downtrend with increasing soil fertilities. The yield increase rate of NPK and N, P, and K fertilizers application were 126.07%, 75.98%, 24.93% and 17.73% under soil fertilities <3.0 t·hm ^-2, respectively, while which were 24.35%, 15.39%, 10.36% and 8.70% under soil fertilities >6.0 t·hm ^-2, respectively. The gross income, fertilization cost, fertilizer profit and input-output ratio of all treatments increased with the improvement of the soil fertilities level. The gross income and fertilizer profit of NPK treatment was the highest under the soil fertilities >6.0 t·hm ^-2, which were 19.64×10 ³ yuan/hm ² and 18.24×10 ³ yuan/hm ², respectively; the gross income and fertilizer profit of -N treatment was the lowest, under the soil fertilities <3.0 t·hm ^-2, which were 8.52×10 ³ yuan/hm ², 7.87×10 ³ yuan/hm ², respectively. In terms of fertilizer use efficiency, the AE and FCR generally decreased when the soil fertilities improved. The contribution rate of soil fertilities was 63.72% averagely, and increased with the increase of the soil fertilities, the contribution rate of soil fertilities of different soil fertilities (<3.0 t·hm ^-2, 3.0 to 4.5 t·hm ^-2, 4.5 to 6.0 t·hm ^-2, and >6.0 t·hm ^-2) were 43.57%, 57.80%, 70.29%, and 80.34%, respectively. The FCR of the NPK treatments or N, P and K fertilizers decreased with the increase of wheat yield under the CK treatment or corresponding fertilizer omission treatment, indicating that enhancing soil indigenous fertilities could reduce the yield dependence on chemical fertilizers. 【Conclusions】Improving soil fertilities could increase the yield and income of wheat, reduce the dependence of wheat yield on chemical fertilizer application. Therefore, it was important to improve the soil fertilities, and apply fertilization rationally according to soil fertilities levels to ensure high and stable yield, increase fertilizer profit, and improve the fertilizer use efficiency in wheat production in Henan Province.

Key words: wheat, soil fertilities, fertilization, yield, economic benefit, fertilizer use efficiency, Henan Province

Xia XU,YaNan ZHAO,YuFang HUANG,JunYing YAN,YouLiang YE. Fertilization Effect of Wheat Under Different Soil Fertilities[J].Scientia Agricultura Sinica, 2018, 51(21): 4076-4086.

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Figures/Tables 7

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Table 1

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Table 2

The economic benefit of wheat under application of N, P and K fertilizers under different soil fertilities in Henan Province"

处理 Treatment	基础地力 Soil fertilities (t·hm^-2)	产值 Gross income (×10³ yuan/hm²)		施肥成本 Fertilizer cost (×10³ yuan/hm²)		施肥利润 Net profit (×10³ yuan/hm²)		产投比 Input-output ratio
处理 Treatment	基础地力 Soil fertilities (t·hm^-2)	范围 Range	平均值 Mean	范围 Range	平均值 Mean	范围 Range	平均值 Mean	范围 Range	平均值 Mean
CK	<3.0	5.21—7.47	6.42±0.70d
	3.0—4.5	7.50—11.23	9.36±1.12c
	4.5—6.0	11.25—15.00	13.05±1.06b
	>6.0	15.00—19.14	16.53±1.14a
NPK	<3.0	9.46—21.65	12.84±3.00d	0.33—2.00	1.14±0.33c	8.14—20.54	13.69±3.02d	5.01—22.50	11.78±3.31b
	3.0—4.5	10.28—25.00	16.45±2.78c	0.33—2.00	1.18±033c	8.98—23.21	15.27±2.76c	5.73—24.94	13.03±3.48a
	4.5—6.0	9.44—24.00	18.53±2.72b	0.33—1.91	1.32±0.31b	7.72—24.16	17.21±2.74b	6.38—27.48	13.34±3.65a
	>6.0	11.13—24.00	19.64±2.67a	0.86—2.18	1.39±0.25a	9.60—23.19	18.24±2.63a	6.30—25.77	13.36±3.04a
-N	<3.0	6.00—17.27	8.52±1.64d	0.23—0.93	0.63±0.20c	5.01—16.57	7.87±1.65d	5.37—38.22	13.93±6.81d
	3.0—4.5	6.00—20.85	11.44±2.21c	0.23—0.93	0.67±0.20c	5.17—20.15	10.79±2.19c	5.55—46.52	17.73±7.04c
	4.5—6.0	8.91—21.14	14.90±2.05b	0.23—1.11	0.74±0.19b	8.21—20.44	14.15±2.03b	8.97—37.90	19.73±5.47b
	>6.0	9.12—21.34	17.18±2.11d	0.47—1.40	0.81±0.16a	8.42—20.41	16.37±2.10a	9.69—40.13	21.40±5.72a
-P	<3.0	8.06—19.20	12.49±2.85d	0.21—1.22	0.81±023c	7.04—18.28	11.69±2.86d	6.80—22.87	14.44±3.91d
	3.0—4.5	8.00—21.99	13.69±2.67c	0.21—1.23	0.83±0.23c	7.21—20.99	12.86±2.67c	6.42—30.23	15.74±4.48c
	4.5—6.0	8.51—21.00	16.24±2.29b	0.21—1.35	0.92±0.22b	7.49—20.38	15.32±2.30b	6.12—31.50	16.98±4.49b
	>6.0	8.16—22.00	17.9±2.44a	0.57—1.44	0.97±0.16a	7.34—21.06	16.94±2.43a	8.98—33.50	18.05±4.52a
-K	<3.0	8.81—19.78	13.04±3.02d	0.22—1.29	0.86±0.24b	7.84—19.56	12.19±3.06d	6.10—24.38	14.15±4.34c
	3.0—4.5	9.11—21.08	14.65±2.49c	0.22—1.30	0.88±0.24b	7.94—20.03	13.78±2.49c	6.80—30.31	15.83±4.30b
	4.5—6.0	9.48—23.00	16.84±2.35b	0.22—1.47	0.99±0.24a	8.41—23.06	15.86±2.36b	7.87—33.50	16.53±4.50ab
	>6.0	12.37—23.66	18.56±2.21a	0.62—1.54	1.04±0.18a	11.40—22.57	17.52±2.19a	8.20—30.02	17.38±3.93a

Table 2

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处理 Treatmen	基础地力 Soil fertilities (t·hm^-2)	农学效率Agronomic efficiency (kg·kg^-1）		偏生产力Partial factor Productivity (kg·kg^-1)
处理 Treatmen	基础地力 Soil fertilities (t·hm^-2)	范围Range	平均值Mean	范围Range	平均值Mean
NPK	<3.0	2.71—16.70	10.05±3.29a	9.39—30.27	18.31±4.39b
	3.0—4.5	1.38—17.61	8.35±3.42b	9.73—34.38	20.11±4.85a
	4.5—6.0	0.00—17.58	6.07±3.18c	10.71—34.59	20.39±4.79a
	>6.0	0.00—12.50	3.45±2.32d	10.60—31.91	20.46±3.87a
N	<3.0	0.00—32.67	14.93±7.42a	18.60—49.44	36.22±8.47b
	3.0—4.5	0.00—29.71	12.13±6.29b	20.10—63.50	41.23±9.16a
	4.5—6.0	0.00—24.03	8.75±5.58c	15.74—69.94	42.52±10.46a
	>6.0	0.00—25.78	5.81±4.76d	24.73—59.70	42.99±8.01a
P	<3.0	0.00—44.25	13.06±9.65a	37.56—98.88	69.71±15.15b
	3.0—4.5	0.00—34.43	13.01±8.45a	40.20—120.25	76.21±18.24a
	4.5—6.0	0.00—34.78	10.43±7.41b	40.12—135.22	78.34±19.80a
	>6.0	0.00—20.00	7.38±5.46c	49.61—119.40	78.54±15.70a
K	<3.0	0.00—30.63	10.77±8.12a	32.55—142.83	72.78±21.33b
	3.0—4.5	0.00—33.80	9.28±7.43ab	36.46—155.25	78.59±21.60a
	4.5—6.0	0.00—28.80	8.48±6.57b	50.44—138.35	80.28±19.60a
	>6.0	0.00—16.19	5.35±4.58c	48.24—153.75	79.67±18.44a

Fertilization Effect of Wheat Under Different Soil Fertilities

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