锦州地区春玉米物候变化趋势及其与水热条件的关系

doi:10.3969/j.issn.1673-503X.2022.05.008

Abstract

Abstract:

Based on the phenological data of spring maize and meteorological observation data at Jinzhou agrometeorological observation station from 1980 to 1984 and 2004 to 2020, the changing trends of spring maize growth period length and hydrothermal factors at the same time were studied using the methods of trend coefficient, tendency rate, correlation analysis, and path analysis.In addition, the relationship between spring maize growth period length and hydrothermal conditions was discussed.The results show that each of the growth period lengths of spring maize in Jinzhou has different trends from 1980 to 1984 and 2004 to 2020.Except for tasseling period, maturity period, and reproductive growth period, the length of other growth periods shows a shortening trend.Particularly, the length of the vegetative growth period is significantly shortened, while the length of the reproductive growth period is significantly prolonged, The whole growth period shows a weak extension trend, and the change is not obvious.The changing trend of hydrothermal conditions in each growth period of spring maize is different.The variation of heat conditions is large, while the variation of water conditions is relatively small.The active accumulated temperature ≥ 10 ℃ (DT10) and Growth Degree Day (GDD) in most growth periods show an increasing trend, and there is a very significant increase in tasseling period, maturity period, reproductive growth period, and whole growth period.It can be seen that heat conditions have a great impact on the growth and development of spring maize.Correlation analysis and path analysis show that both DT10 and GDD have a great effect on the growth period length of spring maize, while water conditions have less effect.The length of seedling period, maturity period, and whole growth period are significantly correlated with water conditions.The water and heat factors restrict and influence each other, and jointly affect the whole growth period of spring maize.

Key words: Spring Maize, Growth period, Hydrothermal conditions, Trend coefficient, Path analysis

CLC Number:

S162.5⁺3

Xian-li ZHAO,Fu CAI,Kang-kang DING,Sai-di WANG,Xiao-ying WANG,Hui ZHANG,Qing-yu JIA,Ri-hong WEN,Hang WU. Phenology variations of spring maize and their correlations with hydrothermal conditions in Jinzhou[J]. Journal of Meteorology and Environment, 2022, 38(5): 64-71.

Figures/Tables 7

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Table 2

Table 3

Table 4

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要素	出苗期	三叶期	七叶期	拔节期	抽雄期	乳熟期	成熟期	营养生长期	生殖生长期	生育期
趋势系数	-0.44^*	-0.41	-0.33	-0.58^**	0.51^*	-0.17	0.79^**	-0.59^**	0.75^**	0.31
倾向率/ (d·a^-1)	-0.28	-0.18	-0.35	-0.26	0.33	-0.08	0.80	-0.74	0.72	-0.02

要素	出苗期	三叶期	七叶期	拔节期	抽雄期	乳熟期	成熟期	营养生长期	生殖生长期	全生育期
日平均气温	0.65^**	0.42^*	0.34	0.01	0.62^**	0.63^**	-0.30	0.64^**	-0.03	0.66^**
日最高气温	0.62^**	0.30	0.29	-0.30	0.46^*	0.52^*	-0.23	0.49^*	0.04	0.48^*
日最低气温	0.57^**	0.50^*	0.40	0.35	0.58^**	0.60^**	-0.29	0.67^**	-0.12	0.73^**
GDD1	0.33	-0.10	-0.14	-0.51^*	0.63^**	0.13	0.77^**	0.25	0.76^**	0.82^**
GDD2	0.16	-0.18	-0.13	-0.54^**	0.62^**	0.07	0.77^**	0.13	0.75^**	0.79^**
DT10	-0.07	-0.29	-0.24	-0.55^**	0.60^**	0.02	0.79^**	-0.24	0.77^**	0.67^**
日平均降水量	0.19	0.01	0.28	0.33	-0.02	-0.05	0.09	0.25	-0.13	0.20
累积降水量	0.10	-0.05	0.17	0.19	0.03	-0.07	0.42^*	0.15	0.16	0.23
累积有效降水量	0.17	-0.02	0.15	0.20	0.04	-0.08	0.42^*	0.19	0.16	0.25

要素	出苗期	三叶期	七叶期	拔节期	抽雄期	乳熟期	成熟期	营养生长期	生殖生长期	全生育期
日平均气温	-0.71^**	-0.40	-0.29	0.13	0.38	-0.17	-0.40	-0.79^**	-0.28	-0.35
日最高气温	-0.69^**	-0.43^*	-0.36	0.38	0.39	-0.11	-0.33	-0.75^**	-0.20	-0.43^*
日最低气温	-0.70^**	-0.32	-0.15	-0.34	0.29	-0.14	-0.36	-0.75^**	-0.30	-0.27
GDD1	0.22	0.68^**	0.86^**	0.94^**	0.93^**	0.90^**	0.96^**	0.07	0.93^**	0.63^**
GDD2	0.43^*	0.76^**	0.87^**	0.97^**	0.94^**	0.93^**	0.97^**	0.24	0.94^**	0.71^**
DT10	0.80^**	0.92^**	0.96^**	0.98^**	0.97^**	0.96^**	0.99^**	0.75^**	0.98^**	0.86^**
日平均降水量	0.27	0.18	0.06	-0.39	-0.33	0.06	0.19	0.16	-0.06	0.37
累积降水量	0.43^*	0.38	0.29	-0.09	-0.20	0.26	0.61^**	0.32	0.29	0.55^**
累积有效降水	0.34	0.34	0.30	-0.09	-0.20	0.26	0.60^**	0.29	0.28	0.53^**

要素	出苗期	三叶期	七叶期	拔节期	抽雄期	乳熟期	成熟期	营养生长期	生殖生长期	全生育期
日平均气温	-0.40	-0.15	—	0.02	—	-0.20	—	-0.82	-0.07	-0.44
日最高气温	—	—	—	-0.00	—	—	—	0.29	—	—
日最低气温	—	—	—	—	—	—	—	0.24	—	—
GDD1	-0.74	-0.58	-0.98	-1.47	-1.92	-0.52	-1.12	-0.49	-0.89	—
GDD2	0.63	—	—	—	—	—	—	—	—	—
DT10	0.74	1.44	1.91	2.43	2.87	1.47	2.09	1.05	1.85	0.84
日平均降水量	—	—	—	—	—	-0.12	—	—	—	-0.46
累积降水量	—	—	—	—	—	0.10	—	—	—	0.52

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Phenology variations of spring maize and their correlations with hydrothermal conditions in Jinzhou

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