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首页> 外文会议>ACIAR Proceedings no.115; Workshop on Tropical Legumes for Sustainable Farming Systems in Southern Africa and Australia; 20021007-09; Limpopo Province(ZA) >Animal Production from Legume-based Ley Pastures in Southeastern Queensland
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Animal Production from Legume-based Ley Pastures in Southeastern Queensland

机译：昆士兰州东南部豆类Ley牧场的动物生产

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摘要

As soils used for cropping in central and southeastern Queensland decline in organic matter and available nitrogen, the benefits of using legume-based ley pastures as an alternative to using fertiliser nitrogen are being more widely recognised. However, as well as providing increases in soil fertility for subsequent cropping cycles, ley pastures also need to provide adequate returns to farmers from livestock production. This study at Brian Pastures Research Station in southeast Queensland compared forage and animal production from eight tropical pastures, which included legumes identified in recent evaluation programs and being developed for use by farmers. The pastures used were lablab (Lablab purpureus cv. Highworth), which is an annual legume that was resown each year; Macrotyloma daltonii CPI 60303 and Vigna trilobata CPI 13671, which are annual legumes that regenerate from seed each year; butterfly pea (Clitoria ternatea cv. Milgarra) and burgundy bean (Macroptitium bracteatum CPI 27404), which are perennial legumes; a grass pasture of green panic (Panicum maximum var. trichoglume cv. Petrie), creeping bluegrass (Bothriochloa insculpta cv. Bisset) and Queensland bluegrass (Dichanthium sericeum); and the same mixture of grasses with butterfly pea and with caatinga stylo (Stylosanthes seabrana cw. Primar and Unica). End-of-season yields ranged from 1 to 5 t/ha, with lablab and the grass-legume pastures producing the highest yields. M. daltonii and V. trilobata regenerated each year, but regular spraying for weed control was necessary. Burgundy bean persisted for three years and butterfly pea was even more persistent. Both butterfly pea and Caatinga stylo persisted and combined well with the grasses. Lablab produced the most liveweight gain/ha, with growth rates from 0.60 to 0.86 kg/head/day. Growth rates on other legumes varied from 0.39 to 0.79 kg/head/day, and there were some differences in the duration of grazing. Liveweight gain/ha was similar for butterfly pea and burgundy bean and was higher than for V. trilobata, followed by M. daltonii. On the grass and grass-legume pastures, growth rates ranged from 0.39 to 0.71 kg/head/day, with legume-based pasture producing gains of 30 to 70 kg/ha more than the grass-only pasture over five years.
机译：随着昆士兰州中部和东南部用于耕种的土壤中有机物质和可用氮的减少，使用豆科植物作为替代肥料氮的利基牧场的好处得到了越来越广泛的认识。然而，除了为随后的种植周期增加土壤肥力之外，牧场还需要从畜牧生产中为农民提供足够的回报。昆士兰州东南部布莱恩牧场研究站的这项研究比较了八种热带牧场的牧草和动物生产，其中包括最近评估程序中确定的豆科植物，供农民使用。所用的草场是lablab（Lablab purpureus cv。Highworth），它是每年重新种植的一年生豆类。一年生的豆类，一年生的豆科植物，大豆蔻CPI 60303和Vigna trilobata CPI 13671。多年生豆科植物蝴蝶豌豆（Clitoria ternatea cv。Milgarra）和勃艮第豆（Macroptitium bracteatum CPI 27404）；一片绿色的草场（恐慌（Panicum maximum var。trichoglume cv。Petrie），blue草（Bothriochloa insculpta cv。Bisset）和昆士兰草（Dichanthium sericeum））；和草与蝴蝶豌豆和caatinga stylo的相同混合物（Stylosanthes seabrana cw。Primar和Unica）。季末单产为1-5吨/公顷，其中白扁豆和豆类草场单产最高。每年，M。daltonii和V. trilobata都会再生，但是必须定期喷洒以控制杂草。勃艮第豆持续了三年，蝴蝶豌豆更持久。蝴蝶豌豆和Caatinga stylo都可以长存并与草很好地结合在一起。 Lablab的增重最大/公顷，增长率为0.60至0.86 kg /头/天。其他豆类的生长速度在0.39至0.79公斤/头/天之间，放牧时间长短有所不同。蝴蝶豌豆和勃艮第豆的活重增重/公顷相似，并且高于三角叶弧菌，其次是道尔顿分枝杆菌。在草类和草类-豆类草场上，生长速度在每头/天0.39到0.71千克/头，在五年内，以豆类为基础的草场比纯草类草场的产量增加了30-70千克/公顷。

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