Intercropping maize (Zea mays L.) with lablab (Lablab purpureus L.) for sustainable fodder production and quality in smallholder rural farming systems in South Africa
Intercropping maize (Zea mays L.) with lablab (Lablab purpureus L.) for sustainable fodder production and quality in smallholder rural farming systems in South Africa
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DOI：
10.1080/21683565.2017.1393649
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发表时间：
2018-01-01
影响因子：
2.6
通讯作者：
Everson, Colin S.
中科院分区：
文献类型：
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作者：
Mthembu, Bonginkosi E.;Everson, Terry M.;Everson, Colin S.
在南非农村潮湿的高草地地区进行了一项田间试验，该地区的特点是过度放牧和放牧能力降低。草原是酸草原，只在6个月的生长季提供美味的材料。本试验旨在评价玉米与LABLAB间作对玉米饲料、籽粒产量、品质、社会经济等方面的影响。结果表明，间作优于单作，间作处理在4年的试验中表现出一致的优势。与LABLAB间作对玉米籽粒和饲料产量有正向影响。间作玉米的饲料产量和饲料总产量均高于单作玉米。单作玉米处理第一季籽粒干物质产量并不显著高于M+L处理。间作显著提高了玉米叶片的粗蛋白质含量，降低了叶片的纤维含量。玉米秸秆和叶片中粗蛋白含量较低，纤维含量较高。田间试验表明，间作形式的各种植物群落通过减少农用化学品，提供可持续的生产、积极的环境和社会影响，并通过避免成本和节省成本在经济上是可行的。这项研究的结果表明，在传统的玉米种植制度中加入LABLAB是有益的，因为通过推迟LABLAB的播种来避免玉米的纠缠。
An on-farm field experiment was conducted in South Africa's rural Moist Tall Grassveld region which is characterized by overgrazing and a reduced grazing capacity. The grassland is sour veld and only provides palatable material during the 6-month growing season. The experiment was conducted to assess the effect of intercropping maize with lablab on maize fodder, grain yield, and quality, social and economic aspects. The results indicated superiority of intercropping over sole cropping, with intercropping treatments showing consistent superiority across 4 years of the experiment. Maize grain and fodder yields were positively influenced by intercropping with lablab. The maize fodder and total fodder yields were higher in intercropped than in sole maize plots. The maize grain DM yield of the first harvest in maize-only treatment was not significantly higher than in M + L treatment. Intercropping significantly increased crude protein of maize leaves and reduced the leaves' fiber content. Crude protein contents were lower and fiber contents higher in maize stalks and leaves than in lablab. The field trial demonstrated that diverse plant communities in the form of intercropping provide sustainable production, positive environmental, and social impacts through reduced agrochemicals and are economically viable through cost avoidance and savings. The results of this study suggest that including lablab in traditional maize cropping systems can be beneficial when entanglement of maize is avoided by delayed under sowing of lablab.