闽牧6号杂交狼尾草产量特征及其资源化利用研究

Characteristics of hybrid pennisetum Minmu No.6 and its resource utilization

【目的】分析闽牧6号杂交狼尾草的种植潜力和社会经济效益。【方法】分别在2015-2017、2018-2020年栽培闽牧6号杂交狼尾草和对照热研4号王草,比较他们在不同试验区的产量和营养成分含量,并分析闽牧6号杂交狼尾草饲喂肉猪的效果。【结果】在福建省5个试验点多年测产中,只有福清海口和福州平潭的闽牧6号杂交狼尾草年均鲜草产量(145600和92850 kg/hm^(2))均显著高于对照(129600和85750 kg/hm^(2));而在全国5省3年区试比较中,闽牧6号杂交狼尾草在福建建阳、广西南宁、广东广州、海南儋州和云南元谋5个试验区的年均干草产量均高于对照,但差异不显著,其干草产量、营养品质、性状稳定性等综合评价较好;利用闽牧6号杂交狼尾草饲喂肉猪,0.5 kg/(头·d)草浆饲喂肉猪效果最佳,可以提高肉猪的氨基酸总量,降低料肉比,每头可以增加经济效益30~70元。【结论】闽牧6号杂交狼尾草的生产性能及稳定性较好,适宜区域广泛,草浆饲喂肉猪经济效益明显。

【Objective】To analyze the cultivation potential,social and economic benefits of hybrid Pennisetum Minmu No.6.【Method】The hybrid Pennisetum Minmu No.6 and king grass Reyan No.4(control)were cultivated in 2015-2017 and 2018-2020,respectively,to compare the yields and nutrient contents in different experimental areas,and to analyze the effect of hybrid Pennisetum Minmu No.6 on feeding pigs.【Result】The annual fresh grass yield of hybrid Pennisetum Minmu No.6 in Haikou of Fuqing city and Pingtan of Fuzhou city(145600 and 92850 kg/hm^(2))was significantly higher than that of the control(129600 and 85750 kg/hm^(2)).In the comparison of the three-year regional trials in five provinces across the country,the annual average hay yield of hybrid Pennisetum Minmu No.6 was higher than that of the control in Jianyang,Nanning,Guangzhou,Danzhou and Yuanmou experi-mental areas,but the difference was not significant.The comprehensive evaluation of hay yield,nutritional quality and character stability was good.The hybrid Pennisetum Minmu No.6 was fed to pigs.The results show that 0.5 kg/(head·d)was used straw pulp has the best effect on feeding pigs.Increasing the total amount of amino acids and reducing the feed meat ratio can increase the economic benefit by 30~70 yuan per head.【Conclusion】The production performance and stability of hybrid Pennisetum Minmu No.6 were good,the suitable area was wide,and the economic benefit of feeding straw pulp to pigs was obvious.