Preliminary study on the effect of different nutrient ratios of compound microbial fertilizer containing PASP on the growth of Cucurbita pepo L.

doi:10.16178/j.issn.0528-9017.20230416

Abstract

Abstract:

To study the reduction in yield and quality of Cucurbita pepo L. caused by blind application of fertilizers during the production in domestic greenhouses, in this study, the compound microbial fertilizer containing polyaspartic acid (PASP) produced by Hebei Peigen Biotechnology Co., Ltd. was used as the test fertilizer, and the related experiments were conducted with different nutrient ratios of N, P₂O₅, K₂O set for experimental treatment (T1, T2, T3), and common compound fertilizer (N 15%,P₂O₅ 15%,K₂O 15%) as CK treatment. Through comprehensive analysis of multiple indicators at different biological stages of Cucurbita pepo L., it was found that T1 treatment (N 16%,P₂O₅ 9%,K₂O 20%) had the best effect within the experimental range; The fertilizer tested not only promotes the nutritional growth of Cucurbita pepo L., promotes flowering and fruit setting, but also improves the appearance quality, soluble sugar content, and V_C content, significantly improving yield and economic benefits.

Key words: compound microbial fertilizer, PASP, nutrient ratio, Cucurbita pepo L., growth effect

CLC Number:

S642.6

LIU Jinkui, ZHAO Meiying, ZHAO Mingjiang, HAN Rumei, WANG Chunfeng, FAN Zhanquan, JIAO Yongkang. Preliminary study on the effect of different nutrient ratios of compound microbial fertilizer containing PASP on the growth of Cucurbita pepo L.[J]. Journal of Zhejiang Agricultural Sciences, 2024, 65(6): 1404-1409.

Figures/Tables 6

References 15

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时间/ d	处理	株高/ cm	主茎直径/ cm	叶数/ 片	叶面积/ cm²	叶片厚度/ mm	叶柄长度/ cm	叶绿素含量/ (mg·cm^-2)
15	T1	7.61 a	1.04 a	5.17 a	143 a	0.297 a	6.54 a	7.65 a
	T2	7.52 a	1.01 a	5.21 a	152 a	0.263 b	6.48 a	7.58 a
	T3	7.70 a	1.04 a	5.24 a	145 a	0.276 b	6.70 a	7.60 a
	CK	7.63 a	1.00 a	5.13 a	147 a	0.250 c	6.39 a	7.39 a
30	T1	11.21 a	1.18 a	8.24 a	820 a	0.346 a	10.53 b	9.35 a
	T2	11.42 a	1.06 b	8.16 a	831 a	0.304 b	12.54 a	9.60 a
	T3	11.05 a	1.17 a	7.95 a	825 a	0.312 b	10.47 b	9.12 a
	CK	11.40 a	1.03 b	7.97 a	819 a	0.276 c	12.38 a	9.23 a
45	T1	19.52 b	1.57 a	11.85 ab	2 460 a	0.354 a	15.76 b	13.75 a
	T2	21.31 a	1.32 b	12.12 a	2 476 a	0.321 bc	17.64 a	14.20 a
	T3	19.35 b	1.50 a	11.00 c	2 143 b	0.327 ab	15.68 b	13.56 a
	CK	20.80 a	1.31 b	11.42 bc	2 423 a	0.311 c	17.36 a	13.68 a
60	T1	28.92 a	1.73 a	18.16 a	4 315 a	0.376 a	18.46 b	19.27 a
	T2	29.04 a	1.54 b	18.35 a	4 226 a	0.335 b	22.10 a	19.34 a
	T3	26.12 b	1.65 a	16.35 b	3 517 b	0.348 b	18.54 b	19.30 a
	CK	28.73 a	1.50 b	18.12 a	4 305 a	0.335 b	23.24 a	18.53 a
75	T1	33.61 a	1.84 a	22.51 a	5 347 a	0.377 a	22.30 b	19.31 a
	T2	34.04 a	1.62 b	22.60 a	5 468 a	0.336 b	25.02 a	19.40 a
	T3	29.86 b	1.78 a	20.18 b	4 776 b	0.359 a	22.62 b	19.35 a
	CK	33.91 a	1.61 b	22.03 a	5 312 a	0.330 b	25.26 a	18.60 a
90	T1	36.57 a	1.89 a	24.85 a	5 975 a	0.377 a	24.36 b	19.34 a
	T2	37.03 a	1.75 b	25.15 a	6 058 a	0.340 b	26.52 a	19.43 a
	T3	34.82 b	1.81 ab	22.50 b	5 534 b	0.360 a	24.32 b	19.36 a
	CK	36.61 a	1.73 b	24.35 a	5 896 a	0.334 b	26.76 a	18.59 a

时间/ d	处理	株高/ cm	主茎直径/ cm	叶数/ 片	叶面积/ cm²	叶片厚度/ mm	叶柄长度/ cm	叶绿素含量/ (mg·cm^-2)
15	T1	7.61 a	1.04 a	5.17 a	143 a	0.297 a	6.54 a	7.65 a
	T2	7.52 a	1.01 a	5.21 a	152 a	0.263 b	6.48 a	7.58 a
	T3	7.70 a	1.04 a	5.24 a	145 a	0.276 b	6.70 a	7.60 a
	CK	7.63 a	1.00 a	5.13 a	147 a	0.250 c	6.39 a	7.39 a
30	T1	11.21 a	1.18 a	8.24 a	820 a	0.346 a	10.53 b	9.35 a
	T2	11.42 a	1.06 b	8.16 a	831 a	0.304 b	12.54 a	9.60 a
	T3	11.05 a	1.17 a	7.95 a	825 a	0.312 b	10.47 b	9.12 a
	CK	11.40 a	1.03 b	7.97 a	819 a	0.276 c	12.38 a	9.23 a
45	T1	19.52 b	1.57 a	11.85 ab	2 460 a	0.354 a	15.76 b	13.75 a
	T2	21.31 a	1.32 b	12.12 a	2 476 a	0.321 bc	17.64 a	14.20 a
	T3	19.35 b	1.50 a	11.00 c	2 143 b	0.327 ab	15.68 b	13.56 a
	CK	20.80 a	1.31 b	11.42 bc	2 423 a	0.311 c	17.36 a	13.68 a
60	T1	28.92 a	1.73 a	18.16 a	4 315 a	0.376 a	18.46 b	19.27 a
	T2	29.04 a	1.54 b	18.35 a	4 226 a	0.335 b	22.10 a	19.34 a
	T3	26.12 b	1.65 a	16.35 b	3 517 b	0.348 b	18.54 b	19.30 a
	CK	28.73 a	1.50 b	18.12 a	4 305 a	0.335 b	23.24 a	18.53 a
75	T1	33.61 a	1.84 a	22.51 a	5 347 a	0.377 a	22.30 b	19.31 a
	T2	34.04 a	1.62 b	22.60 a	5 468 a	0.336 b	25.02 a	19.40 a
	T3	29.86 b	1.78 a	20.18 b	4 776 b	0.359 a	22.62 b	19.35 a
	CK	33.91 a	1.61 b	22.03 a	5 312 a	0.330 b	25.26 a	18.60 a
90	T1	36.57 a	1.89 a	24.85 a	5 975 a	0.377 a	24.36 b	19.34 a
	T2	37.03 a	1.75 b	25.15 a	6 058 a	0.340 b	26.52 a	19.43 a
	T3	34.82 b	1.81 ab	22.50 b	5 534 b	0.360 a	24.32 b	19.36 a
	CK	36.61 a	1.73 b	24.35 a	5 896 a	0.334 b	26.76 a	18.59 a

处理	第一朵雌花开放时间/d	雌花数/ 个	坐果数/ 个	坐果率/ %
T1	35	185	168	90.81 a
T2	36	182	152	83.80 b
T3	37	180	138	76.92 c
CK	37	179	135	75.41 c

处理	第一朵雌花开放时间/d	雌花数/ 个	坐果数/ 个	坐果率/ %
T1	35	185	168	90.81 a
T2	36	182	152	83.80 b
T3	37	180	138	76.92 c
CK	37	179	135	75.41 c

处理	西葫芦果实日增长量/(g·d^-1)
处理	45 d	60 d	75 d	90 d
T1	100.50	150.00	81.46	84.00
T2	95.15	138.28	78.83	81.65
T3	91.29	120.45	73.69	75.28
CK	94.15	137.27	78.05	80.05