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多花黑麦草+箭筈豌豆混播草地地上生物量和营养品质动态研究

花匠小妙招
2025-05-02 18:31

摘要： 为探讨混播比例和刈割时期对禾豆混播草地地上生物量和营养品质的影响，本研究设多花黑麦草100%（H）、75%多花黑麦草+25%箭筈豌豆（HJ1）、50%多花黑麦草+50%箭筈豌豆（HJ2）、25%多花黑麦草+75%箭筈豌豆（HJ3）与100%箭筈豌豆（J）5个处理，结果表明，混播比例可显著（P<0.05）影响分蘖/分枝数、粗蛋白含量、单茬/累计干物质产量、粗蛋白产量和可消化干物质产量，对株高、茎叶比、干物质含量、中性洗涤纤维含量、酸性洗涤纤维含量和可消化干物质含量无显著影响；刈割时期只对黑麦草分蘖数和单茬干物质产量无显著性影响，对其余指标有显著影响（P<0.05）；混播比例与刈割时期对箭筈豌豆分枝数、茎叶比、粗蛋白含量、可消化干物质含量和累计干物质产量有交互效应（P<0.05）。混播组合HJ2累计干物质产量19 030.44kg·hm-2、累计粗蛋白产量3 130.66 kg·hm-2、累计可消化干物质产量13 214.14 kg·hm-2，为最佳混播组合。

关键词: 多花黑麦草, 箭筈豌豆, 混播, 地上生物量, 营养品质

Abstract: To discuss the effects of grass/legume ratio and cutting time on above-ground biomass and nutrient value of grass-legume mixture grassland,Five treatments (100% annual ryegrass (H),75% annual ryegrass+25% common vetch (HJ1),50% annual ryegrass+50% common vetch (HJ2),25% annual ryegrass+75% common vetch (HJ3) and 100% common vetch (J) were set up in this study. The results showed that sowing ratio had significant effects (P<0.05) on grass tillers/legume branches,crude protein content,productions of dry matter,crude protein and in vitro digestible dry matter,but had no effects on plant height,ratio of stem/leaf and concentrations of dry matter,neutral detergent fiber,acid detergent fiber and in vitro dry matter digestibility;cutting time had effects (P<0.05) on most of parameters (except of grass tillers and dry matter production at each harvest);there were significant interactive effects of sowing ratio and cutting time on legume branches,ratio of stem/leaf,crude protein content,in vitro dry matter digestibility and accumulative dry matter production(P<0.05). Mixture with HJ2 produced dry matter of 19 030.44 kg·hm-2,crude protein of 3 130.66 kg·hm-2,digestive dry matter of 13 214.14 kg·hm-2. When all parameters considered,mixture with HJ2 was the best ratio of mixture.

Key words: Annual ryegrass, Common vetch, Mixture sowing, Above-ground biomass, Nutritive value

中图分类号:

S54