Effects of Combined Application of Slow-Release Fertilizer and Inorganic Fertilizer on Rice Growth and Eating Quality in Coastal Saline Alkali Land

doi:10.11924/j.issn.1000-6850.casb20200300244

Abstract

Abstract:

The effects of N application on rice growth period, growth characteristics, yield and eating quality under the combination of slow-release fertilizer and inorganic fertilizer were studied. ‘Nanjing 9108’ was taken as the experimental material, five fertilization treatments were designed under the condition of 3‰-6‰ soil salt content. The root index, leaf area index and dry matter accumulation were measured at the key nodes of growth period, and the growth index and eating quality of rice were compared. The results showed that, the reproductive growth period ratio in T3 group (the treatment group with slow-release fertilizer and inorganic fertilizer and 20% reduction of N content) was 0.25% shorter than that in T1 group (the treatment group with total N fertilizer and inorganic fertilizer), and the ratio of vegetative growth period increased by 0.23% and the whole growth period decreased by 2 days. The total root length, leaf area index, dry matter accumulation per unit leaf area, stem sheath dry matter per unit area and yield trend of rice were T3> T1> T2> T4> T5. There was a negative correlation between protein content and eating value in rice. The higher the protein content, the lower the taste value. There was also a negative correlation between amylose content and taste value in rice. The higher the amylose content, the lower the taste value. With the increase of nitrogen application, the eating quality of rice reduced significantly. The T5 treatment group without N element had the highest taste value. The combination of slow-release fertilizer and inorganic fertilizer enhanced the soil fertility, but the rice had the lowest taste value. When slow-release fertilizer and inorganic fertilizer were applied together, and the N content was reduced by 20% and panicle fertilizer was not applied with any N treatment, the growth index and eating value of rice could be significantly improved.

Key words: coastal saline alkali land, slow release fertilizer, rice, yield index, taste quality

CLC Number:

S158.3
S511

Dong Xiaoliang, Hou Hongyan, Zhang Jinfeng, Zhou Hong, Zhang Maolin, Wei Lixing, Zhu Defeng. Effects of Combined Application of Slow-Release Fertilizer and Inorganic Fertilizer on Rice Growth and Eating Quality in Coastal Saline Alkali Land[J]. Chinese Agricultural Science Bulletin, 2021, 37(4): 1-7.

Figures/Tables 6

References 28

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处理	纯氮	基肥		蘖肥		穗肥		磷钾肥补充量
处理	纯氮	磷酸二胺	缓释肥	尿素	缓释肥	尿素	缓释肥	过磷酸钙	硫酸钾
T1	300	375	0	355.5	0	150	0	0	72
T2	240	0	684	150	0	0	0	436.5	0
T3	240	0	534	120	75	30	75	436.5	0
T4	240	300	0	285	0	120	0	216	72
T5	0	0	0	0	0	0	0	436.5	72

处理	纯氮	基肥		蘖肥		穗肥		磷钾肥补充量
处理	纯氮	磷酸二胺	缓释肥	尿素	缓释肥	尿素	缓释肥	过磷酸钙	硫酸钾
T1	300	375	0	355.5	0	150	0	0	72
T2	240	0	684	150	0	0	0	436.5	0
T3	240	0	534	120	75	30	75	436.5	0
T4	240	300	0	285	0	120	0	216	72
T5	0	0	0	0	0	0	0	436.5	72

处理	播种期(日-月)	插秧期(日-月)	抽穗期(日-月)	成熟期(日-月)	全生育期/d	播种—抽穗/d	抽穗—成熟/d
T1	15-04	03-06	04-09	10-10	178	142	36
T2	15-04	03-06	01-09	05-10	173	139	34
T3	15-04	03-06	02-09	08-10	176	140	36
T4	15-04	03-06	01-09	05-10	173	139	34
T5	15-04	03-06	28-08	02-10	170	136	31

处理	播种期(日-月)	插秧期(日-月)	抽穗期(日-月)	成熟期(日-月)	全生育期/d	播种—抽穗/d	抽穗—成熟/d
T1	15-04	03-06	04-09	10-10	178	142	36
T2	15-04	03-06	01-09	05-10	173	139	34
T3	15-04	03-06	02-09	08-10	176	140	36
T4	15-04	03-06	01-09	05-10	173	139	34
T5	15-04	03-06	28-08	02-10	170	136	31

测定项目	处理	分蘖期	拔节期	抽穗期	测定项目	处理	分蘖期	拔节期	抽穗期
总根长/cm	T1	49.0±4.2b	53.7±3.3b	60.5±3.4b	单位叶面积干物质量/(g/m²)	T1	357.0±9.3b	370.3±7.1a	381.5±6.8b
	T2	46.6±4.6c	51.5±4.2c	56.3±4.1c		T2	330.2±8.6c	357.5±10.0b	371.3±9.2
	T3	51.3±3.6a	54.6±4.1a	64.4±3.9a		T3	365.3±8.1a	372.9±8.4a	398.7±8.4a
	T4	43.8±4.0d	50.8±4.0c	54.6±4.5c		T4	328.7±8.2c	350.9±8.3b	377.4±8.0d
	T5	23.4±2.6e	30.1±2.9d	34.9±3.4d		T5	274.5±6.4d	300.4±4.6c	323.1±5.2e
叶面积指数	T1	4.3±0.2b	6.5±0.2b	8.0±0.2a	单位面积茎鞘干物质量/(g/m²)	T1	524.1±18.3a	763.7±19.5a	900.7±20.3a
	T2	3.9±0.1c	6.4±0.2c	7.4±0.1c		T2	501.6±14.1b	653.9±17.8b	853.7±20.6b
	T3	4.5±0.1a	6.9±0.1a	8.1±0.2a		T3	532.4±18.1a	766.9±20.4a	924.5±21.6a
	T4	3.8±0.2c	6.3±0.2c	7.6±0.2b		T4	478.3±13.0c	626.4±16.5c	860.1±20.1b
	T5	2.3±0.1d	5.0±0.1d	6.2±0.1d		T5	297.1±18.2d	471.5±18.3d	633.8±21.3c