Field-scale influence of karite (Vitellaria paradoxa) on sorghum production in the Sudan zone of Burkina Faso
Field-scale influence of karite (Vitellaria paradoxa) on sorghum production in the Sudan zone of Burkina Faso
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DOI：
10.1023/a:1006389828259
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发表时间：
2000-07-01
影响因子：
2.2
通讯作者：
Boffa, JM
中科院分区：
文献类型：
--
作者：
Boffa, JM;Taonda, SJB;Boffa, JM
高粱（Sorcium bicolor L.）Moench）的生产，每个样方都有一个karite（Vitellaria paradoxa C. F. Gaertn.）在布基纳法索南部的一个村庄，在一个降雨量低于平均水平的季节，在农场上进行了评估。树冠下，株高和粮食产量显着降低，粮食产量的因素为16%，比其他地方的样带。此外，树冠外缘的平均株高、平均生物量、单位面积和单株籽粒产量均高于田间中部。在0-20 cm土层内，土壤含水量随距林木距离的增加而显著降低。表层土壤有机碳和钾含量在树冠周围比块体中部更丰富。sorpentum的性能在区域下和周围的冠层预测在现场规模和中央样带控制相比。平均树冠半径为225至275厘米，平均密度为12和31株/公顷的树木比没有树木的地区的粮食产量高。因此，农民不会通过将公园树木密度降低到这些水平以下来提高谷物产量。当坚果生产包括在分析中时，在所有密度下，在田间保持树木在经济上都是有利的。
Sorghum (Sorghum bicolor L. Moench) production in 15 transect blocks, each with a karite (Vitellaria paradoxa C. F. Gaertn.) tree at each end, was evaluated on-farm in a village of southern Burkina Faso in a season of below-average rainfall. Under tree crowns, plant height and grain yield were significantly lower, by a factor of 16% for grain yield, than elsewhere in transects. In addition, mean plant height, and mean biomass and grain production per area as well as per plant were higher at the outside edge of tree crowns than in the middle of the field. Soil moisture content decreased significantly with increasing distance from the tree in the 0-20 cm soil layer. Top soils were also richer in organic carbon and potassium around tree crowns than in the middle of blocks. Sorghum performance in the zone under and around canopies was projected at field scale and compared to central transect controls. Grain production in karite parklands was higher with trees of mean crown radii of 225 to 275 cm, average densities of 12 and 31 trees/ha than in areas without trees. Therefore, farmers do not improve cereal production by reducing parkland tree densities below these levels. When nut production is included in the analysis, maintaining trees in fields can be economically advantageous at all densities.