融合镁元素的水肥多因子耦合对黄瓜综合营养品质的调控

doi:10.3864/j.issn.0578-1752.2019.18.017

Abstract

Abstract:

【Objective】 To provide a scientific basis of water and fertilizer management for high quality in cucumber production, this research aimed to analyze the effects of water-fertilizer coupling with magnesium on the comprehensive nutritional quality of cucumber. 【Method】 A design of composite quadratic orthogonal regressive rotation with four factors and five levels was adopted to characterize the experimental variables, such as the percentage of irrigation upper limit to field water holding capacity (X₁), nitrogen application rate (X₂), potassium application rate (X₃) and magnesium application rate (X₄). The contents of soluble protein, free amino acid, soluble sugar, reducing sugar, vitamin C and nitrate were determined, and these six quality indicators were weighted according to AHP analytic hierarchy process, entropy weighting method and game-based combination weighting method, and then the comprehensive nutrition quality evaluation system of cucumber fruit was constructed based on TOPSIS method. Also, the response model of cucumber comprehensive nutritional quality to the coupling of water and fertilizer was established by regression analysis. 【Result】 The weights of single indicators were expressed as: vitamin C (0.2457)> reducing sugar (0.2305)> free amino acid (0.1666)> soluble sugar (0.1390)> soluble protein (0.1179)> nitrate (0.1003). Regarding the four-factor coupling, when the combination of factors were optimized as with magnesium application of 176.54-182.23 kg?hm ^-2, the upper limit of irrigation amount accounted of 65.71%-67.61%, the nitrogen application of 490.78-512.16 kg?hm ^-2and potassium application of 591.00-608.11 kg?hm ^-2, the comprehensive nutritional quality of cucumber reached to the best level. 【Conclusion】 Water-fertilizer coupling had a significant effect on the comprehensive nutritional quality of cucumber. Proper control of irrigation and nitrogen application, increase of magnesium and potassium application had a positive effect on the improvement of cucumber comprehensive nutritional quality.

Key words: cucumber, water and fertilizer coupling, comprehensive nutritional quality, orthogonal rotation, magnesium element

ZHU ChangAn,HE ZhiHao,CAI ZeLin,LIU JianFei,ZHANG Zhi. Regulation of Comprehensive Nutritional Quality of Cucumber by Water and Fertilizer Coupling with Magnesium[J].Scientia Agricultura Sinica, 2019, 52(18): 3258-3270.

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References 54

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因素 Factor	变化间距Intervals	变量设计及水平编码 Designed variable levels and codes ear codes
因素 Factor	变化间距Intervals	-1.682	-1	0	1	1.682
灌水量 Irrigation amount (%) (X₁)	23.78	20	36.22	60	83.78	100
施氮量 Nitrogen application rate (kg/plant) (X₂）	0.0154	0	0.0104	0.0258	0.0412	0.0516
施钾量 Potassium application rate (kg/plant) (X₃)	0.0137	0	0.0093	0.0230	0.0367	0.0460
施镁量 Magnesium application rate (kg/plant) (X₄)	0.0041	0	0.0028	0.0069	0.0110	0.0138

处理号 No.	灌水量 Irrigation amount	施氮量 Nitrogen application rate	施钾量 Potassium application rate	施镁量 Magnesium application rate
1	1（60.26）	1（0.1766）	1（0.0679）	1（0.0677）
2	1（60.26）	1（0.1766）	-1（0.0172）	-1（0.0172）
3	1（60.26）	-1（0.0446）	1（0.0679）	-1（0.0172）
4	1（60.26）	-1（0.0446）	-1（0.0172）	1（0.0677）
5	-1（30.24）	1（0.1766）	1（0.0679）	-1（0.0172）
6	-1（30.24）	1（0.1766）	-1（0.0172）	1（0.0677）
7	-1（30.24）	-1（0.0446）	1（0.0679）	1（0.0677）
8	-1（30.24）	-1（0.0446）	-1（0.0172）	-1（0.0172）
9	-1.682（20.19）	0（0.1106）	0（0.0426）	0（0.0424）
10	1.682（70.31）	0（0.1106）	0（0.0426）	0（0.0424）
11	0（45.25）	1.682（0.2216）	0（0.0426）	0（0.0424）
12	0（45.25）	-1.682（0）	0（0.0426）	0（0.0424）
13	0（45.25）	0（0.1106）	1.682（0.0851）	0（0.0424）
14	0（45.25）	0（0.1106）	-1.682（0）	0（0.0424）
15	0（45.25）	0（0.1106）	0（0.0426）	1.682（0.0843）
16	0（45.25）	0（0.1106）	0（0.0426）	-1.682（0）
17	0（45.25）	0（0.1106）	0（0.0426）	0（0.0424）
18	0（45.25）	0（0.1106）	0（0.0426）	0（0.0424）
19	0（45.25）	0（0.1106）	0（0.0426）	0（0.0424）
20	0（45.25）	0（0.1106）	0（0.0426）	0（0.0424）
21	0（45.25）	0（0.1106）	0（0.0426）	0（0.0424）
22	0（45.25）	0（0.1106）	0（0.0426）	0（0.0424）
23	0（45.25）	0（0.1106）	0（0.0426）	0（0.0424）

判断矩阵 Judgment matrix						局部权重 Local weight	最终权重 Ultimate weight	一致性检验参数 Consistency test parameter
总目标层A~准则层B General goal A-Rule hierarchy B	指标Index	C₁		C₂		W_A	w_A	CR=0 λ_max=2.000
	C₁	1		1.2		0.5455	0.54
	C₂	0.833		1		0.4545	0.45
准则层B₁~指标层C Rule hierarchy B₁-index hierarchy C	指标Index	C₁₁	C₁₂		C₁₃	W_B1	w_B1	CR=0 λ_max=3.000
	C₁₁	1	1.34		1.65	0.4253	0.232
	C₁₂	0.7463	1		1.21	0.3155	0.1721
	C₁₃	0.6061	0.8264		1	0.2592	0.1414
准则层B2~指标层C Rule hierarchy B₂-index hierarchy C	指标Index	C₂₁	C₂₂		C₂₃	W_B2	w_B2	CR=0.0001<0.1 λ_max=3.0001
	C₂₁	1	0.52		0.61	0.219	0.0996
	C₂₂	1.9231	1		1.21	0.4256	0.1934
	C₂₃	1.6393	0.8264		1	0.3554	0.1615

序号 No.	C₁₁	C₁₂	C₁₃	C₂₁	C₂₂	C₂₃	D⁺	D^-	C_i	排序 Sorting
1	0.0620	0.0390	0.0249	0.0203	0.0561	0.0380	0.0103	0.0392	0.701	1
2	0.0448	0.0328	0.0231	0.0180	0.0397	0.0249	0.0333	0.0139	0.43	18
3	0.0492	0.0340	0.0246	0.0210	0.0473	0.0270	0.0242	0.0217	0.495	13
4	0.0477	0.0336	0.0241	0.0204	0.0420	0.0262	0.0288	0.0173	0.433	17
5	0.0613	0.0367	0.0249	0.0193	0.0602	0.0377	0.0113	0.0404	0.682	2
6	0.0608	0.0425	0.0249	0.0197	0.0540	0.0373	0.0113	0.0387	0.628	4
7	0.0580	0.0374	0.0258	0.0198	0.0561	0.0347	0.0216	0.0409	0.470	14
8	0.0480	0.0328	0.0248	0.0191	0.0424	0.0259	0.0291	0.0170	0.331	21
9	0.0443	0.0300	0.0230	0.0173	0.0388	0.0248	0.0352	0.0111	0.215	23
10	0.0478	0.0338	0.0243	0.0206	0.0448	0.0265	0.0268	0.0192	0.403	19
11	0.0419	0.0218	0.0215	0.0290	0.0324	0.0220	0.0433	0.0117	0.216	22
12	0.0481	0.0338	0.0245	0.0196	0.0463	0.0269	0.0260	0.0203	0.435	16
13	0.0455	0.0338	0.0242	0.0182	0.0403	0.0253	0.0320	0.0154	0.390	20
14	0.0566	0.0366	0.0261	0.0197	0.0559	0.0339	0.0136	0.0340	0.655	3
15	0.0476	0.0338	0.0242	0.0205	0.0429	0.0265	0.0281	0.0180	0.443	15
16	0.0540	0.0393	0.0259	0.0209	0.0521	0.0291	0.0168	0.0304	0.611	5
17	0.0498	0.0340	0.0245	0.0213	0.0474	0.0270	0.0237	0.0221	0.505	11
18	0.0492	0.0340	0.0245	0.0210	0.0472	0.0269	0.0243	0.0216	0.497	12
19	0.0517	0.0347	0.0254	0.0224	0.0512	0.0278	0.0198	0.0263	0.562	8
20	0.0518	0.0357	0.0255	0.0246	0.0517	0.0281	0.0184	0.0277	0.595	6
21	0.0509	0.0360	0.0251	0.0245	0.0492	0.0277	0.0203	0.0257	0.578	7
22	0.0499	0.0343	0.0248	0.0216	0.0485	0.0272	0.0228	0.0231	0.518	10
23	0.0507	0.0339	0.0248	0.0192	0.0487	0.0274	0.0312	0.0312	0.519	9
S⁺	0.0620	0.0425	0.0261	0.0290	0.0602	0.0380
S^-	0.0419	0.0218	0.0215	0.0173	0.0324	0.0220
R	0.791^**	0.658^**	0.706^**	0.352	0.611^**	0.873^**

Regulation of Comprehensive Nutritional Quality of Cucumber by Water and Fertilizer Coupling with Magnesium

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