硫酸钾复合肥和种植密度对薏苡光合特性、农艺性状及产量的影响

doi:10.16035/j.issn.1001-7283.2016.01.017

Abstract

Abstract:

To explore the cultivation techniques suitable for planting Coix lacryma-jobi L. in Guizhou, Coix lacryma-jobi L. 14-2 was grown in an experiment of split-plot design to study the influence of potassium sulphate compound fertilizer and planting density on yield, agronomic traits, and photosynthetic characteristics. The results showed that fertilization and planting density had significant effects on the yield, plant height, stem nodal number, grain number per spike, 1000-grain weight, net photosynthetic rate, stomatal conductance, intercellular CO₂ concentration, and transpiration rate. The yield, plant height, stem nodal number, grain number per spike, 1000-grain weight, net photosynthetic rate, stomatal conductance, and transpiration rate firstly increased and decreased with the increase of fertilization and planting density, while the intercellular CO₂ concentration firstly decreased and then increased with the increase of fertilization and planting density. Correlation analysis indicated that the yield was significantly and positively correlated with plant height, stem nodal number, grain number per spike, 1000-grain weight, net photosynthetic rate, stomatal conductance, and transpiration rate, while significantly and negatively correlated with intercellular CO₂ concentration. In conclusion, the combination of fertilization of 225kg/hm ² and planting density of 1.2×10 ⁵ plants/hm ² is recommended for Coix lacryma-jobi L. cultivation in Guizhou.

Key words: Coix lacryma-jobi L., Fertilization, Planting density, Yield, Agronomic traits, Photosynthetic characteristics

Lingbo Zhou,Can Wang,Guobin Zhang,Yan Xu,Junxia Bai,Lanying Wu,Hai Luo,Mingbo Shao. Effects of Potassium Sulphate Compound Fertilizer and Planting Density on Photosynthetic Characteristics, Agronomic Traits and Yield in Coix lacryma-jobi L.[J].Crops, 2016, 32(1): 93-97.

Figures/Tables 4

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References 12

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变异来源 Variation source	自由度 Degree of freedom	产量 Yield	株高 Plant height	主茎节数 Stem nodal number	穗粒数 Grain number per spike	千粒重 1000-grain weight	净光合速率 Net photosyn- thetic rate	气孔导度 Stomatal conductance	胞间CO₂浓度 Intercellular CO₂ concentration	蒸腾速率 Transpiration rate
A	2	176.31^**	16.33^**	45.63^**	109.70^**	28.08^**	62.63^**	173.09^**	118.83^**	243.80^**
B	2	124.52^**	185.16^**	51.93^**	89.31^**	95.15^**	138.51^**	192.89^**	199.03^**	122.37^**
A×B	4	1.22	0.28	0.17	0.68	0.73	2.74	6.14^**	0.49	0.59

处理 Treatments		产量 Yield (kg/hm²)	株高 Plant height (cm)	主茎节数 Stem nodal number (节)	穗粒数 Grain number per spike(粒)	千粒重 1000-grain weight (g)	净光合速率 Net hotosynthetic rate[μmol/(m²·s)]	气孔导度 Stomatal conductance [mol/(m²·s)]	胞间CO₂浓度 Intercellular CO₂concentration (μmol/mol)	蒸腾速率 Transpiration rate[mmol/(m²·s)]
施肥量	A1	2 589.47c	156.63c	7.75c	163.41c	95.38c	7.64c	0.27c	437.74a	5.36c
Fertilization	A2	3 861.98a	175.28a	9.83a	185.09a	103.22a	9.32a	0.45a	371.74c	6.31a
	A3	3 305.37b	164.61b	8.41b	174.31b	99.21b	8.33b	0.33b	402.71b	5.75b
种植密度	B1	2 500.67c	146.13c	7.52c	163.11c	93.39c	7.47c	0.25c	430.86a	5.47c
Planting	B2	4 038.40a	183.29a	9.79a	186.08a	107.80a	9.53a	0.45a	380.68c	6.19a
density	B3	3 217.75b	164.10b	8.68b	173.62b	96.62b	8.29b	0.35b	410.64b	5.77b

处理 Treatments	产量 Yield (kg/hm²)	株高 Plant height (cm)	主茎节数 Stem nodal number (节)	穗粒数 Grain number per spike(粒)	千粒重 1000-grain weight(g)	净光合速率 Net photosynthetic rate[μmol/(m²·s)]	气孔导度 Stomatal conductance [mol/(m²·s)]	胞间CO₂浓度 Intercellular CO₂concentration (μmol/mol)	蒸腾速率 Transpiration rate [mmol/(m²·s)]
A1B1	1 985.44e	138.40d	6.50g	152.58e	90.24e	6.86e	0.19e	462.18a	5.03f
A1B2	3 287.80c	176.48b	8.86cd	173.16c	102.62c	8.76cd	0.34c	408.48d	5.78d
A1B3	2 495.16d	155.01c	7.89ef	164.50d	93.27de	7.29e	0.26d	442.56b	5.28e
A2B1	3 079.43c	157.07c	8.79cd	173.81c	96.26d	8.33d	0.33c	403.69d	5.96c
A2B2	4 731.30a	194.14a	10.94a	198.43a	112.70a	10.57a	0.59a	356.36f	6.70a
A2B3	3 775.20b	174.62b	9.75b	183.04b	100.69c	9.07bc	0.43b	385.15e	6.27b
A3B1	2 437.13d	142.92d	7.27fg	162.95d	93.66de	7.23e	0.22e	426.72c	5.43e
A3B2	4 094.10b	179.26b	9.56bc	186.66b	108.07b	9.26b	0.43b	377.19e	6.08c
A3B3	3 382.89c	162.66c	8.39de	173.31c	95.89d	8.50d	0.35c	404.21d	5.74d

	株高 Plant height	主茎节数 Stem nodal number	穗粒数 Grain number per spike	千粒重1000-grain weight	净光合速率Net photosynthetic rate	气孔导度Stomatal conductance	胞间CO₂浓度Intercellular CO₂concentration	蒸腾速率Transpiration rate
主茎节数 Stem nodal number	0.958^**
穗粒数 Grain number per spike	0.943^**	0.985^**
千粒重 1000-grain weight	0.951^**	0.915^**	0.938^**
净光合速率 Net photosynthetic rate	0.965^**	0.973^**	0.977^**	0.946^**
气孔导度 Stomatal conductance	0.948^**	0.977^**	0.984^**	0.927^**	0.986^**
胞间CO₂浓度 Intercellular CO₂concentration	-0.904^**	-0.958^**	-0.982^**	-0.908^**	-0.964^**	-0.951^**
蒸腾速率 Transpiration rate	0.896^**	0.974^**	0.973^**	0.880^**	0.964^**	0.964^**	-0.977^**
产量 Yield	0.956^**	0.970^**	0.990^**	0.944^**	0.988^**	0.984^**	-0.979^**	0.957^**

Effects of Potassium Sulphate Compound Fertilizer and Planting Density on Photosynthetic Characteristics, Agronomic Traits and Yield in Coix lacryma-jobi L.

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