不同种植密度对大麦产量和青贮品质的影响

doi:10.16035/j.issn.1001-7283.2020.01.018

Abstract

Abstract:

In order to determine the effects of planting densities on different barley cultivars (lines) in northern Xinjiang, three planting densities (2.25×10 ⁴, 3.75×10 ⁴ and 5.25×10 ⁴ plant/ha) were set in this experiment. We studied the changes of multiple indexes of three barley cultivars (lines) (P13-3, P14-22 and Kenpimai 13) under the above planting densities, including agronomic traits, dry matter, nutritional composition of silage raw materials and silage quality. The results showed that increasing sowing density could significantly reduce the proportion of stems to leaves and increase the proportion of panicles of P14-22 and P13-3, but it had no significant effect on Kenpimai 13. The maximum fresh weight was achieved under medium density and maximum dry matter content was increased significantly in medium and high planting densities. In this experiment, increasing planting density could increase the contents of neutral and acid detergent fiber, decrease the contents of crude protein, crude fat and crude ash of P13-3. The increase in planting density had no significant effect on the content of soluble carbohydrate. There was no significant difference in pH and contents of lactic acid, acetic acid, propionic acid and butyric acid under different planting densities. In three barley cultivars (lines), Kenpimai 13 was the best one on quality after silage. To sum up, silage barley in northern Xinjiang has high yield and nutritional quality under the condition of medium density.

Key words: Barley (Hordeum vulgare L.), Density, Silage quality, Nutritional value

Zhao Zhun,Li Jian,Song Ruijiao,Guo Yan,Ling Jiangrui,Qi Juncang. Effects of Different Planting Densities on Biomass Yield and Silage Quality of Barley[J].Crops, 2020, 36(1): 110-116.

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变异来源 Source	自由度 Degree of freedom	株高 Plant height	茎比例 Stem proportion	叶比例 Leaf proportion	穗比例 Ear proportion
区组Blocks	2	0.23	0.18	5.04	2.37
品种(系)Cultivars (Lines)	2	4.84^**	18.79^**	33.03^**	45.30^**
密度Densities	2	402.43^**	6.18^**	14.01^**	24.42^**
密度×品种(系) Density×Cultivar (Line)	4	2.69^*	3.59^*	12.37^**	16.62^**

品种(系) Cultivar (Line)	种植密度 Planting density	株高(cm) Plant height	茎比例(g/g) Stem proportion	叶比例(g/g) Leaf proportion	穗比例(g/g) Ear proportion
P14-22	低Low	85.38±1.26c	0.23±0.02a	0.24±0.01a	0.53±0.03e
	中Medium	88.44±1.96c	0.20±0.01b	0.15±0.01bc	0.65±0.01cd
	高High	87.20±2.02c	0.18±0.01bc	0.15±0.02bc	0.66±0.01bcd
垦啤麦13 Kenpimai13	低Low	108.24±2.47a	0.17±0.00cd	0.13±0.01c	0.70±0.01a
	中Medium	109.46±3.05a	0.18±0.00bc	0.14±0.01c	0.68±0.01abc
	高High	104.08±1.24b	0.17±0.01cd	0.13±0.02c	0.70±0.01a
P13-3	低Low	86.04±3.20c	0.18±0.03bc	0.18±0.01b	0.62±0.02d
	中Medium	87.18±1.89c	0.15±0.01d	0.16±0.02bc	0.65±0.02cd
	高High	86.24±2.62c	0.15±0.01d	0.15±0.03bc	0.67±0.03bcd

变异来源 Source	自由度 Degree of freedom	鲜草产量 Fresh grass yield	干草产量 Hay grass yield	干物质含量 Dry matter content	可溶性碳水化合物 Water soluble carbohydrate
区组Blocks	2	1.47	0.38	28.03	0.43
品种(系) Cultivars (Lines)	2	62.97^**	9.07^**	30.82^**	7.24^**
密度Densities	2	37.27^**	24.20^**	18.37^**	0.83
密度×品种(系) Density×Cultivar (Line)	4	4.82^**	1.53^*	2.71^*	0.19

品种(系) Cultivar (Line)	种植密度 Planting density	鲜草产量(t/hm²) Fresh grass yield	干草产量(t/hm²) Hay grass yield	干物质含量(%) Dry matter content	可溶性碳水化合物(%) Water soluble carbohydrate
P14-22	低Low	28.17±0.44cd	14.30±0.66c	51.23±2.21c	2.82±0.23b
	中Medium	33.61±0.51a	17.74±0.77a	52.14±1.27c	2.43±0.54b
	高High	30.28±1.75bc	16.14±1.30ab	53.32±0.87c	2.54±0.43b
垦啤麦13 Kenpimai 13	低Low	24.72±1.13ef	12.61±0.39cd	50.86±2.43c	4.52±0.52a
	中Medium	30.02±1.80b	17.11±1.29ab	56.82±0.77b	4.21±0.34a
	高High	30.22±1.39bc	17.16±1.16a	57.29±0.28b	4.22±0.63a
P13-3	低Low	23.72±1.36f	12.25±0.99d	52.39±2.23c	2.22±0.43b
	中Medium	26.44±0.95de	14.85±0.88bc	56.82±1.86b	1.73±0.37b
	高High	23.72±0.25f	15.38±0.80bc	65.34±3.17a	1.93±0.48b

变异来源Source	自由度 Degree of freedom	中性洗涤纤维 Neutral detergent fiber	酸性洗涤纤维 Acid detergent fiber	粗蛋白 Crude protein	粗脂肪 Crude fat	粗灰分 Crude ash
区组Blocks	2	0.28	0.17	1.02	0.18	6.77
品种(系) Cultivars (Lines)	2	1.64	4.38	134.86^**	4.56^*	18.46^**
密度Densities	2	8.99^*	32.63^**	24.50^**	1.50	11.27^**
密度×品种(系) Density×Cultivar (Line)	4	2.41	8.69^*	20.01^**	4.01^*	1.59

Effects of Different Planting Densities on Biomass Yield and Silage Quality of Barley

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