Exploratory experiment on fertilizer utilization efficiency of early rice Zhongzao 39 in Huangyan District

doi:10.16178/j.issn.0528-9017.20230549

Abstract

Abstract:

This study used early rice Zhongzao 39 as the experimental material and conducted a fertilizer efficiency experiment in Yuanqiao Town, Huangyan District, to explore the fertilizer utilization efficiency under conventional and formula fertilization conditions. The results showed that under the condition of reducing nutrient input by 51 kg·hm^-2 compared with conventional fertilization, the yield of early rice under formula fertilization was 7 386 kg·hm^-2, which was an increase of 109 kg·hm^-2 compared with the yield of 7 277 kg·hm^-2 under conventional fertilization. According to the difference method, the utilization rates of nitrogen fertilizer, phosphorus fertilizer, and potassium fertilizer in the formula fertilization treatment were 38.7%, 41.0%, and 85.7%, respectively. Among them, the utilization rates of nitrogen fertilizer and potassium fertilizer were 6.0 and 24.1 percentage points higher than conventional fertilization, and the utilization rate of phosphorus fertilizer was 1.0 percentage point lower than conventional fertilization. Further improvement of fertilizer utilization rate is needed.

Key words: early rice, Huangyan, formula fertilizer, fertilizer utilization efficiency

CLC Number:

S511

HE Jie, PENG Luyi, SHI Jie. Exploratory experiment on fertilizer utilization efficiency of early rice Zhongzao 39 in Huangyan District[J]. Journal of Zhejiang Agricultural Sciences, 2024, 65(7): 1555-1558.

Figures/Tables 3

References 7

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试验	处理	籽粒产量/ (kg·hm^-2)	秸秆产量/ (kg·hm^-2)	株高/ cm	穗长/ cm	有效穗/ (万·hm^-2)	每穗实粒数	结实率/ %	千粒重/ g
常规	aPK	5 394	3 873	82.3	14.8	11.20	110	83.3	25.8
	aNK	7 208	5 523	93.1	16.8	13.95	131	88.5	26.3
	aNP	6 583	4 935	91.6	17.3	14.03	126	90.6	26.4
	aNPK	7 277	5 601	94.6	17.9	14.32	130	89.0	26.8
配方	bPK	5 280	3 561	82.9	15.3	11.37	111	85.4	26.8
	bNK	7 294	5 139	93.2	17.6	14.12	122	89.7	25.9
	bNP	6 713	4 868	91.8	17.2	14.28	127	90.1	25.9
	bNPK	7 386	5 171	93.6	17.0	14.24	132	90.0	26.7

试验	处理	籽粒产量/ (kg·hm^-2)	秸秆产量/ (kg·hm^-2)	株高/ cm	穗长/ cm	有效穗/ (万·hm^-2)	每穗实粒数	结实率/ %	千粒重/ g
常规	aPK	5 394	3 873	82.3	14.8	11.20	110	83.3	25.8
	aNK	7 208	5 523	93.1	16.8	13.95	131	88.5	26.3
	aNP	6 583	4 935	91.6	17.3	14.03	126	90.6	26.4
	aNPK	7 277	5 601	94.6	17.9	14.32	130	89.0	26.8
配方	bPK	5 280	3 561	82.9	15.3	11.37	111	85.4	26.8
	bNK	7 294	5 139	93.2	17.6	14.12	122	89.7	25.9
	bNP	6 713	4 868	91.8	17.2	14.28	127	90.1	25.9
	bNPK	7 386	5 171	93.6	17.0	14.24	132	90.0	26.7

试验	处理	籽粒			秸秆
试验	处理	全N	全P	全K	全N	全P	全K
常规	aPK	8.41	2.68	1.72	3.31	1.76	15.07
	aNK	10.35	2.64	1.86	4.67	1.51	18.46
	aNP	10.22	2.70	1.67	5.24	1.70	16.31
	aNPK	11.36	3.08	1.97	5.52	1.67	20.75
配方	bPK	8.30	2.48	1.79	3.43	1.75	15.81
	bNK	11.05	2.52	1.83	4.46	1.60	18.85
	bNP	10.95	2.84	1.69	5.24	1.80	16.77
	bNPK	11.98	2.98	1.89	5.62	1.72	20.23

试验	处理	籽粒			秸秆
试验	处理	全N	全P	全K	全N	全P	全K
常规	aPK	8.41	2.68	1.72	3.31	1.76	15.07
	aNK	10.35	2.64	1.86	4.67	1.51	18.46
	aNP	10.22	2.70	1.67	5.24	1.70	16.31
	aNPK	11.36	3.08	1.97	5.52	1.67	20.75
配方	bPK	8.30	2.48	1.79	3.43	1.75	15.81
	bNK	11.05	2.52	1.83	4.46	1.60	18.85
	bNP	10.95	2.84	1.69	5.24	1.80	16.77
	bNPK	11.98	2.98	1.89	5.62	1.72	20.23

试验	处理	籽粒养分吸收量/(kg·hm^-2)			秸秆养分吸收量/(kg·hm^-2)			对应元素肥料利用率/%
试验	处理	N	P₂O₅	K₂O	N	P₂O₅	K₂O	对应元素肥料利用率/%
常规	aPK	45.4	33.1	11.2	12.8	15.6	70.3	N 32.7
	aNK	74.6	43.6	16.2	25.8	19.1	122.9	P 42.0
	aNP	67.3	40.7	13.2	25.9	19.2	97.0	K 61.6
	aNPK	82.7	51.3	17.3	30.9	21.4	140.1	0
配方	bPK	43.8	30.0	11.4	12.2	14.3	67.8	N 38.7
	bNK	80.6	42.1	16.1	22.9	18.8	116.7	P 41.0
	bNP	73.5	43.7	13.7	25.5	20.1	98.4	K 85.7
	bNPK	88.5	50.4	16.8	29.1	20.4	126.1	0