Effects of Fertilizer Reduction Combined with Organic Fertilizer and Mixed Sowing Ratio on Forage Value of Avena sativa + Vicia sativa in Alpine Region

doi:10.11924/j.issn.1000-6850.casb2022-1000

Abstract

Abstract:

In this study, 6 mixed ratios and 4 kinds of fertilization models were designed, and the main objective was to solve the problems existing in the traditional oat planting mode in the alpine region. The fresh forage yield, hay forage yield, plant height, crude protein (CP), ether extract (EE), crude ash, neutral detergent fiber (NDF), and acid washing fiber (ADF) of Avena sativa + Vicia sativa mixed grassland were determined, the grey correlation degree was used to evaluate the performance of mixed grassland. The results showed that the optimal ratio of Avena sativa + Vicia sativa was 6:4. Compared with oat monoculture, the crude protein and ether extract with the above ratio increased by 60 % and 36.4 % respectively, while the yield did not significantly decrease. When 50% fertilizer was subtituted by organic fertilizer, the yield of hay increased by 61.13%, and the crude protein increased by 23.9%. Bio-organic fertilizers could act as an alternative to chemical fertilizers. There was an interaction between fertilization and mixed sowing ratio. The comprehensive evaluation was the best under the conditions of 50% fertilizer reduction+50% organic fertilizer, mixed sowing ratio of Avena sativa and Vicia sativa at 6:4, which was suitable for planting and popularization in Xigaze region.

Key words: fertilizer reduction, organic fertilizer, Avena sativa, Vicia sativa, alpine region

RENZENG Wangdui. Effects of Fertilizer Reduction Combined with Organic Fertilizer and Mixed Sowing Ratio on Forage Value of Avena sativa + Vicia sativa in Alpine Region[J]. Chinese Agricultural Science Bulletin, 2023, 39(35): 81-86.

Figures/Tables 8

References 26

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处理	燕麦播量	箭筈豌豆播量	处理	施肥
A₁ (2:8)	36	96	B₁ (不施肥)	0
A₂ (4:6)	72	72	B₂ (化肥)	255磷酸二胺+75尿素
A₃ (6:4)	108	48	B₃ (有机肥)	1500
A₄ (8:2)	144	36	B₄ (有机肥＋化肥)	750有机肥+112.5磷酸二胺+37.5尿素
A₅ (10:0)	180	0
A₆ (0:10)	0	120

处理	燕麦播量	箭筈豌豆播量	处理	施肥
A₁ (2:8)	36	96	B₁ (不施肥)	0
A₂ (4:6)	72	72	B₂ (化肥)	255磷酸二胺+75尿素
A₃ (6:4)	108	48	B₃ (有机肥)	1500
A₄ (8:2)	144	36	B₄ (有机肥＋化肥)	750有机肥+112.5磷酸二胺+37.5尿素
A₅ (10:0)	180	0
A₆ (0:10)	0	120

变异来源	鲜重	干重	株高	CP	EE	粗灰分	NDF	ADF
混播比例	81.14^**	124.98^**	744.41^**	105.69^**	15.46^**	11.76^**	33.07^**	38.51^**
施肥处理	137.67^**	107.22^**	91.37^**	27.60^**	4.90^**	11.95^**	23.05^**	16.79^**
混播比例×施肥处理	3.20^**	2.85^**	8.33^**	2.52^**	2.83^**	2.15^*	3.75^**	3.35^**

变异来源	鲜重	干重	株高	CP	EE	粗灰分	NDF	ADF
混播比例	81.14^**	124.98^**	744.41^**	105.69^**	15.46^**	11.76^**	33.07^**	38.51^**
施肥处理	137.67^**	107.22^**	91.37^**	27.60^**	4.90^**	11.95^**	23.05^**	16.79^**
混播比例×施肥处理	3.20^**	2.85^**	8.33^**	2.52^**	2.83^**	2.15^*	3.75^**	3.35^**

处理	鲜重	干重	株高	CP	EE	粗灰分	NDF	ADF
A₁	28094.51±1767.99b	7212.64±399.71c	58.53±1.85d	13.8±0.64b	2.43±0.1a	6.95±0.19a	49.66±0.92b	28.63±0.63b
A₂	35790.39±2100.85a	10011.36±527.35b	68.02±2.42c	13.33±0.54bc	2.58±0.08a	7.04±0.2a	50.49±1.02b	28.42±0.69b
A₃	40357.17±3048.31a	10938.81±520.58ab	70.08±2.33c	12.19±0.71cd	2.58±0.09a	7.19±0.27a	49.79±1.34b	28.35±0.49b
A₄	42408.03±2117.08a	11733.53±898.41ab	76.83±2.06b	11.23±0.45d	2.5±0.11a	7.18±0.21a	53.38±1.06a	31.21±0.63a
A₅	41039.75±2080.8a	12285.83±605.2a	104.33±1.29a	7.62±0.13e	1.89±0.04b	5.94±0.1b	55.91±0.61a	32.68±0.47a
A₆	26104.69±2080.8b	5666.7±459.17c	42.75±1.22e	17.53±0.34a	2.59±0.09a	7.28±0.14a	45.96±0.64c	25.58±0.67c