水条播对寒地水稻农艺性状和产量构成因素的影响

doi:10.16035/j.issn.1001-7283.2020.01.014

Abstract

Abstract:

In recent years, with the shortage of labor, the advantages of saving labor of direct seeding rice have gradually received attention, so it is extremely important to choose rice varieties suitable for sowing in line under water (direct seeding). To this end, using 29 rice varieties from cold region as materials, the effects of sowing in line under water on agronomic traits, yield components and yield of rice in cold region were studied by randomized block design. The effects of sowing in line under water on panicle number per unit area of rice in cold region was positive, the effects on plant height, panicle length, panicle weight, number of primary branches, number of secondary branches, number of grains per panicle, grain formation rate, 1000-grain weight, biological yield, economic coefficient and theoretical yield were negative. Sowing in line under water increased the variability of panicle weight, primary branch number, secondary branch number, panicle number per unit area, grain number per panicle, grain formation rate, 1000-grain weight, biological yield, economic coefficient and theoretical yield, while the variation coefficient of 1000-grain weight was smaller, and it response to sowing in line under water was slow. The response of panicle weight, grain formation rate and biomass to sowing in line under water was more sensitive, and the response of theoretical yield to sowing in line under water was also more sensitive.

Key words: Rice, Sowing in line under water, Cold region, Agronomic traits, Yield

Wang Heying,Guo Xiaohong,Zhang Qinming,Ma Yan,Li Meng,Jiang Hongfang,Hu Yue,Lan Yuchen,Xu Lingqi,Guo Hongtao,Lü Yandong. Effects of Sowing in Line under Water on Agronomic Characters and Yield Components of Rice in Cold Region[J].Crops, 2020, 36(1): 81-88.

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编号Number	品种Variety	编号Number	品种Variety
T01	绥粳4号	T16	垦粳3号
T02	绥粳8号	T17	龙粳64号
T03	绥粳15号	T18	龙粳20号
T04	绥粳17号	T19	龙粳21号
T05	垦鉴稻5号	T20	龙粳47号
T06	垦鉴稻6号	T21	龙粳48号
T07	垦稻12号	T22	龙粳50号
T08	垦稻17号	T23	龙粳51号
T09	垦稻23号	T24	龙粳52号
T10	垦粳6号	T25	龙粳55号
T11	龙庆稻1号	T26	龙粳57号
T12	龙庆稻2号	T27	龙粳58号
T13	龙庆稻3号	T28	龙粳59号
T14	龙庆稻5号	T29	龙粳60号
T15	龙庆稻20号

性状 Trait	旱育稀植 Dry breeding seedlings and sparse planting		水条播 Sowing in line under water		水条播适应性反应指数ARI
性状 Trait	平均Mean	变异系数CV(%)	平均Mean	变异系数CV(%)	平均Mean	变异系数CV(%)
株高 Plant height (cm)	98.00	6.26	91.60	7.43	93.6	6.96
穗长Panicle length (cm)	18.30	10.33	16.90	10.12	92.5	8.12
穗重Panicle weight (g)	1.98	14.89	1.70	20.67	86.4	19.17
一次枝梗数Primary branches	10.20	11.92	10.20	14.84	100.0	11.31
二次枝梗数Secondary branches	17.60	20.41	15.20	32.18	87.8	32.71

性状Trait	穗长 Panicle length	穗重 Panicle weight	一次枝梗数 Primary branches	二次枝梗数 Secondary branches	理论产量 Theoretical yield
穗长Panicle length	-1	0.35	0.13	-0.45^*	0.08
穗重Panicle weight	-0.48^**	1	0.58^**	-0.61^**	0.56^**
一次枝梗数Primary branches	-0.37^*	0.62^**	1	-0.47^**	0.22
二次枝梗数Secondary branches	-0.75^**	0.55^**	0.42^*	-1	0.19
理论产量Theoretical yield	-0.06	0.40^*	0.14	-0.13	1

性状Trait	旱育稀植 Dry breeding seedlings and sparse planting		水条播 Sowing in line under water		适应性反应指数 ARI
性状Trait	平均Mean	变异系数CV(%)	平均Mean	变异系数CV(%)	平均Mean	变异系数CV(%)
单位面积穗数Panicles per square meter	506.3	12.45	592.1	16.47	117.4	14.95
穗粒数Grains per panicle	86.6	18.63	70.8	20.35	82.4	15.75
成粒率Kernel setting rate (%)	81.2	12.44	74.6	16.08	92.5	15.89
千粒重1000-grain weight (g)	26.5	5.29	26.2	7.55	98.6	4.12
生物产量Biological yield (t/hm²)	18.6	11.88	17.1	15.38	93.0	17.33
经济系数Economic coefficient	0.499	10.17	0.464	13.16	93.413	13.07
理论产量Theoretical yield (t/hm²)	9.2	12.81	7.9	16.33	85.8	14.01

性状Trait	单位面积穗数 Panicles per square meter	穗粒数 Grains per panicle	成粒率 Kernel setting rate	千粒重 1000-grain weight	理论产量 Theoretical yield
单位面积穗数Panicles per square meter	-1	-0.37^*	-0.36	-0.28	0.04
穗粒数Grains per panicle	-0.53^**	-1	-0.32	-0.35	0.31
成粒率Kernel setting rate	-0.34	-0.19	-1	-0.49^**	0.45^*
千粒重1000-grain weight	-0.07	-0.05	-0.09	-1	0.32
理论产量Theoretical yield	-0.03	-0.33	-0.51^**	-0.06	1

Effects of Sowing in Line under Water on Agronomic Characters and Yield Components of Rice in Cold Region

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