Effects of Simplified Fertilization on Yield of Hybrid Rice Varieties in Mid-rice/Ratoon Rice System in No Tillage Winter Paddy Field

doi:10.11924/j.issn.1000-6850.casb2021-0286

Abstract

Abstract:

To explore the effects of simplified fertilization on yield and yield components of hybrid rice varieties in mid-rice/ratoon rice system in no tillage winter paddy fields, and to screen out high-yield varieties for production, field experiments were conducted in 2016-2017. 18 hybrid mid-rice varieties were selected as materials, under the condition of no tillage winter paddy field with the total nitrogen application rate of 120 kg/hm², nitrogen was applied by two methods as simplified fertilization SF (basal application for one time, basal: tiller: panicle fertilizer as 10∶0∶0) and conventional fertilization CF (basal: tiller: panicle fertilizer as 5∶3∶2). The results showed that the effects of the two nitrogen application methods on the yield of the first crop, the ratoon crop and their total were not significant. The yield of the first crop, the ratoon crop and their total was 9.46 t/hm², 1.50t/hm² and 10.96 t/hm² under SF, respectively, 1.40%, -6.77% and 0.20% higher than that of CF, respectively. There were significant differences of the first crop, the ratoon crop and their total among the 18 hybrid varieties, their yield variation range was 8.70-10.19 t/hm², 0.59-2.29 t/hm², 10.21-11.57 t/hm², respectively. There was a significant negative correlation (r=0.61) between the yield of the first crop and that of the ratoon crop. The partial correlation coefficients between the total yield and effective panicles, spikelets per panicle, grain setting rate, 1000-grain weight of the first crop and effective panicles of the ratoon crop were extremely significant, and the regression equation was established. Therefore, the simplified fertilization method of one-time basal application is an effective way to achieve high yield and labor-saving in no tillage winter paddy field. The selection of varieties with consideration of panicle and grain is conducive to the realization of high yield of mid-rice/ratoon rice system. The varieties ‘Jingyou 727’, ‘Jing3you 177’, ‘Nei6you 103’ and ‘Nei6you 107’ with high yield and nitrogen partial productivity are selected, which can be popularized in the cultivation of mid-rice/ratoon rice system in the ecological region of the experiment.

Key words: simplified fertilization, yield, mid-rice/ratoon rice system, no tillage winter paddy field

CLC Number:

S311

ZHANG Lin, ZHOU Xingbing, LIU Mao, JIANG Peng, GUO Xiaoyi, GAO Shangqing, XU Wei, LI Yanrong, MEI Xiufeng, ZHU Yongchuan, XIONG Hong, XU Fuxian. Effects of Simplified Fertilization on Yield of Hybrid Rice Varieties in Mid-rice/Ratoon Rice System in No Tillage Winter Paddy Field[J]. Chinese Agricultural Science Bulletin, 2022, 38(14): 1-10.

Figures/Tables 11

References 26

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年份	pH	有机质/%	碱解氮/(mg/kg)	速效钾/(mg/kg)	有效磷/(mg/kg)	全氮/(g/kg)	全磷/(g/kg)	全钾/(g/kg)
2016	5.22	2.65	186	187	18.20	1.21	0.15	14.5
2017	4.19	3.40	263	359	24.84	1.83	0.13	39.9

年份	pH	有机质/%	碱解氮/(mg/kg)	速效钾/(mg/kg)	有效磷/(mg/kg)	全氮/(g/kg)	全磷/(g/kg)	全钾/(g/kg)
2016	5.22	2.65	186	187	18.20	1.21	0.15	14.5
2017	4.19	3.40	263	359	24.84	1.83	0.13	39.9

品种	头季产量/(t/hm²)				再生季产量/(t /hm² )				两季总产/(t /hm² )
	2016		2017		2016		2017		2016		2017
	SF	CF	SF	CF	SF	CF	SF	CF	SF	CF	SF	CF
泸优137	8.37 e	8.80 cd	10.22 bc	10.15 bcd	1.81 a	1.08 bcd	2.20 d	2.12 efg	10.18 abcd	9.88 abc	12.42 abcd	12.27 cde
泸优5号	9.06 abcd	8.53 cde	9.35 ef	10.34 bcd	1.32 bc	1.15 bc	1.57 e	1.71 h	10.39 abc	9.69 bcd	10.93 i	12.05 def
旌优727	8.82 bcde	8.59 cde	10.24 abc	9.75 cdefg	1.42 bc	1.06 bcd	2.86 ab	3.10 a	10.25 abcd	9.65 cd	13.09 a	12.84 abc
川优6203	9.10 abcd	8.39 cde	8.87 f	8.45 h	1.49 ab	1.19 bc	2.57 bc	2.80 ab	10.59 ab	9.58 cd	11.43 fghi	11.25 g
川绿优188	9.56 a	9.03 bc	10.91 a	11.25 a	0.41 f	0.27 g	0.62 f	1.05 i	9.97 bcdef	9.30 cd	11.53 fghi	12.30 cde
天优863	8.44 de	8.64 cde	10.17 bc	9.86 bcdef	1.24 bcd	1.25 bc	2.44 cd	2.49 bcd	9.69 cdefg	9.89 abc	12.61 abc	12.35 bcde
宜香优196	8.29 e	8.05 e	9.99 bcde	9.10 gh	0.93 de	0.94 bcde	1.64 e	2.38 de	9.22 fg	8.98 d	11.63 efghi	11.48 fg
蓉优3324	9.44 ab	9.67 ab	10.23 abc	10.46 b	0.64 ef	0.77 def	1.44 e	2.11 efg	10.08 abcde	10.43 ab	11.68 defghi	12.57 abcd
绵优5323	9.54 a	9.98 a	10.55 ab	10.19 bcd	0.40 f	0.46 fg	1.48 e	1.82 gh	9.94 bcdef	10.44 ab	12.03 bcdef	12.01 defg
旌优127	8.17 e	8.03 e	9.44 def	9.42 efg	0.91 de	0.90 cde	1.75 e	2.22 def	9.09 g	8.93 d	11.19 ghi	11.64 efg
旌3优177	8.32 e	8.13 de	10.05 bcd	10.13 bcd	1.53 ab	1.66 a	3.00 a	2.97 a	9.85 bcdefg	9.79 bc	13.05 a	13.10 ab
广优66	9.38 ab	8.99 bc	10.07 bcd	10.42 bc	0.50 f	0.51 fg	1.65 e	1.84 gh	9.88 bcdef	9.5 cd	11.72 defgh	12.26 cde
绿优4923	8.85 bcde	8.89 c	10.22 bc	9.96 bcde	0.46 f	0.63 ef	1.48 e	1.94 fgh	9.31 efg	9.52 cd	11.70 defghi	11.90 defg
蓉18优9号	9.16 abc	8.83 c	10.42 abc	9.83 bcdef	0.41 f	0.53 fg	1.48 e	2.08 efg	9.57 defg	9.36 cd	11.90 cdefg	11.91 defg
蓉18优1015	8.48 cde	8.50 cde	8.79 f	9.27 fg	1.25 bcd	1.29 b	2.26 cd	2.76 abc	9.74 cdefg	9.79 bc	11.04 hi	12.04 def
德优4727	8.84 bcde	8.60 cde	9.87 cde	9.37 efg	1.33 bc	1.09 bcd	2.47 cd	2.43 cde	10.17 abcd	9.7 bcd	12.34 abcde	11.81 defg
内6优107	8.65 cde	8.65 cde	10.43 abc	10.33 bcd	1.33 bc	1.24 bc	2.46 cd	2.83 ab	9.98 bcdef	9.89 abc	12.89 a	13.16 a
内6优103	9.72 a	9.65 ab	10.65 ab	9.72 defg	1.13 cd	0.98 bcde	2.13 d	2.32 de	10.85 a	10.62 a	12.78 ab	12.05 def
平均值	8.90	8.78	10.03	9.89	1.03	0.94	1.97	2.28	9.93	9.72	12.00	12.17
F值
年份(y)	914.13^**				890.69^**				1570.63 ^**
氮肥管理方式(N)	0.64 NS				2.91 NS				0.03 NS
品种(V)	13.84^**				50.26^**				8.27 ^**
y×N	0.00 NS				9.28^*				2.16 NS
y×V	4.40^**				6.31^**				3.96 ^**
N×V	1.27 NS				2.62^**				1.50 NS
y×N×V	1.62 NS				0.81 NS				1.34 NS

品种	头季产量/(t/hm²)				再生季产量/(t /hm² )				两季总产/(t /hm² )
	2016		2017		2016		2017		2016		2017
	SF	CF	SF	CF	SF	CF	SF	CF	SF	CF	SF	CF
泸优137	8.37 e	8.80 cd	10.22 bc	10.15 bcd	1.81 a	1.08 bcd	2.20 d	2.12 efg	10.18 abcd	9.88 abc	12.42 abcd	12.27 cde
泸优5号	9.06 abcd	8.53 cde	9.35 ef	10.34 bcd	1.32 bc	1.15 bc	1.57 e	1.71 h	10.39 abc	9.69 bcd	10.93 i	12.05 def
旌优727	8.82 bcde	8.59 cde	10.24 abc	9.75 cdefg	1.42 bc	1.06 bcd	2.86 ab	3.10 a	10.25 abcd	9.65 cd	13.09 a	12.84 abc
川优6203	9.10 abcd	8.39 cde	8.87 f	8.45 h	1.49 ab	1.19 bc	2.57 bc	2.80 ab	10.59 ab	9.58 cd	11.43 fghi	11.25 g
川绿优188	9.56 a	9.03 bc	10.91 a	11.25 a	0.41 f	0.27 g	0.62 f	1.05 i	9.97 bcdef	9.30 cd	11.53 fghi	12.30 cde
天优863	8.44 de	8.64 cde	10.17 bc	9.86 bcdef	1.24 bcd	1.25 bc	2.44 cd	2.49 bcd	9.69 cdefg	9.89 abc	12.61 abc	12.35 bcde
宜香优196	8.29 e	8.05 e	9.99 bcde	9.10 gh	0.93 de	0.94 bcde	1.64 e	2.38 de	9.22 fg	8.98 d	11.63 efghi	11.48 fg
蓉优3324	9.44 ab	9.67 ab	10.23 abc	10.46 b	0.64 ef	0.77 def	1.44 e	2.11 efg	10.08 abcde	10.43 ab	11.68 defghi	12.57 abcd
绵优5323	9.54 a	9.98 a	10.55 ab	10.19 bcd	0.40 f	0.46 fg	1.48 e	1.82 gh	9.94 bcdef	10.44 ab	12.03 bcdef	12.01 defg
旌优127	8.17 e	8.03 e	9.44 def	9.42 efg	0.91 de	0.90 cde	1.75 e	2.22 def	9.09 g	8.93 d	11.19 ghi	11.64 efg
旌3优177	8.32 e	8.13 de	10.05 bcd	10.13 bcd	1.53 ab	1.66 a	3.00 a	2.97 a	9.85 bcdefg	9.79 bc	13.05 a	13.10 ab
广优66	9.38 ab	8.99 bc	10.07 bcd	10.42 bc	0.50 f	0.51 fg	1.65 e	1.84 gh	9.88 bcdef	9.5 cd	11.72 defgh	12.26 cde
绿优4923	8.85 bcde	8.89 c	10.22 bc	9.96 bcde	0.46 f	0.63 ef	1.48 e	1.94 fgh	9.31 efg	9.52 cd	11.70 defghi	11.90 defg
蓉18优9号	9.16 abc	8.83 c	10.42 abc	9.83 bcdef	0.41 f	0.53 fg	1.48 e	2.08 efg	9.57 defg	9.36 cd	11.90 cdefg	11.91 defg
蓉18优1015	8.48 cde	8.50 cde	8.79 f	9.27 fg	1.25 bcd	1.29 b	2.26 cd	2.76 abc	9.74 cdefg	9.79 bc	11.04 hi	12.04 def
德优4727	8.84 bcde	8.60 cde	9.87 cde	9.37 efg	1.33 bc	1.09 bcd	2.47 cd	2.43 cde	10.17 abcd	9.7 bcd	12.34 abcde	11.81 defg
内6优107	8.65 cde	8.65 cde	10.43 abc	10.33 bcd	1.33 bc	1.24 bc	2.46 cd	2.83 ab	9.98 bcdef	9.89 abc	12.89 a	13.16 a
内6优103	9.72 a	9.65 ab	10.65 ab	9.72 defg	1.13 cd	0.98 bcde	2.13 d	2.32 de	10.85 a	10.62 a	12.78 ab	12.05 def
平均值	8.90	8.78	10.03	9.89	1.03	0.94	1.97	2.28	9.93	9.72	12.00	12.17
F值
年份(y)	914.13^**				890.69^**				1570.63 ^**
氮肥管理方式(N)	0.64 NS				2.91 NS				0.03 NS
品种(V)	13.84^**				50.26^**				8.27 ^**
y×N	0.00 NS				9.28^*				2.16 NS
y×V	4.40^**				6.31^**				3.96 ^**
N×V	1.27 NS				2.62^**				1.50 NS
y×N×V	1.62 NS				0.81 NS				1.34 NS

因子	最高分蘖数/m²	有效穗/m²	每穗颖花数	结实率/%	千粒重/g
年份（y）	2052.99^**	49.37^*	0.45 NS	19.91^*	18.07 NS
氮肥管理方式(N)	3.66 NS	6.03 NS	1.16 NS	0.69 NS	2.99 NS
品种(V)	12.69^**	17.62^**	47.03 ^**	17.43^**	236.64^**
y×N	0.40 NS	1.62 NS	0.76 NS	0.33 NS	2.81 NS
y×V	1.31 NS	1.78^*	7.20^**	5.41^**	3.99^**
N×V	0.88 NS	1.04 NS	1.15 NS	1.16 NS	1.24 NS
y×N×V	0.29 NS	1.25 NS	1.53 NS	1.05 NS	1.18 NS