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首页> 外文期刊>Journal of Cereals and Oilseeds >Effects of different maize (Zea mays L.) soybean (Glycine max (L.) Merrill) intercropping patterns on yields and land equivalent ratio
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Effects of different maize (Zea mays L.) soybean (Glycine max (L.) Merrill) intercropping patterns on yields and land equivalent ratio

机译：不同玉米（Zea mays L.）大豆（Glycine max（L.）Merrill）间作模式对单产和土地当量比的影响

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In central highlands of Kenya, the low soil fertility and inability to replenish it are amongst the major constraints affecting the productivity of maize and cash crops, leading to hunger and poverty. The adoption of ISFM technologies such as maize-soybean intercropping system is being promoted as one of the options to address low crop productivity among the farmers. This study intended to determine the effects of maize-soybean intercropping?patterns on yields and to quantify the land equivalent ratio (LER) of different maize–soybean intercropping patterns in the two contrasting sites. The experiment was arranged in a randomized complete block design (RCBD) with four replications. The treatments were four maize (M) – soybean (S) intercropping patterns (conventional=1M:1S; MBILI-MBILI=2M:2S; 2M:4S; 2M:6S) and two sole crops of maize and soybean, respectively. The results showed that in both sites during the both seasons maize stover and grain yields were significantly affected by the intercropping pattern. During 2012 LR at Embu site the MBILI treatment produced significantly higher stover and grain yields (13.12 t ha-1, p=0.0001 and 6.11 t ha-1, p<0.0001, respectively) than all other treatments. During 2012 SR, still the MBILI treatment had recorded significantly the highest stover and grain yield (7.62 t ha-1, p<0.0001 and 5.62 t ha-1 p=0.0467, respectively) than all other treatments. During 2012 LR at Kamujine site the conventional treatment produced significantly the highest stover yield (3.87 t ha-1, p=0.0461) than only the 2M:6S treatment. During 2012 SR at Kamujine site, the MBILI treatment had recorded significantly the highest stover and grain yield (6.55 t ha-1, p=0.0005 and 3.55 t ha-1 p=0.0006, respectively) than all other treatments. During both seasons in both sites, the soybean yield was significantly affected by the intercropping pattern. During the 2012 LR, the yields were reduced by 60 and 81% due to the intercropping with maize, at Embu and Kamujine, respectively; whereas, during the 2012 SR, the yields were reduced by 52 and 78% as effect of intercropping with maize, at Embu and Kamujine, respectively. During both seasons at both locations, the partial land equivalent ratio (LER) values were significantly affected by the intercropping patterns (p<0.0001).
机译：在肯尼亚中部高地，土壤肥力低下和无法补充土壤肥力是影响玉米和经济作物生产力，导致饥饿和贫困的主要制约因素之一。促进采用玉米－大豆间作系统等ISFM技术，作为解决农民间低产的选择之一。这项研究旨在确定玉米-大豆间作模式对单产的影响，并量化两个对比地点不同玉米-大豆间作模式的土地当量比（LER）。实验安排在一个随机的完整模块设计（RCBD）中，重复四次。分别处理了四种玉米（M）–大豆（S）间作模式（常规= 1M：1S; MBILI-MBILI = 2M：2S; 2M：4S; 2M：6S）和两种玉米和大豆。结果表明，在两个季节中，两个地点的玉米秸秆和谷物产量都受到间作模式的显着影响。 2012年，在恩布（Embu）站点的LR上，MBILI处理的秸秆和谷物产量显着高于所有其他处理（分别为13.12 t ha-1，p = 0.0001和6.11 t ha-1，p <0.0001）。在2012 SR期间，MBILI处理仍记录了最高的秸秆和谷物产量（分别为7.62 t ha-1，p <0.0001和5.62 t ha-1 p = 0.0467）。在2012年，卡姆吉涅（Kamujine）基地的LR处理中，常规处理比仅2M：6S处理产生的秸秆产量最高（3.87 t ha-1，p = 0.0461）。在2012年SR的Kamujine基地期间，MBILI处理的秸秆和谷物产量均显着高于其他所有处理，分别最高（分别为6.55 t ha-1，p = 0.0005和3.55 t ha-1 p = 0.0006）。在两个地点的两个季节中，间作模式均显着影响大豆单产。在2012年LR期间，由于分别在Embu和Kamujine与玉米间作，单产降低了60％和81％;而在2012 SR期间，由于与玉米间作，分别在Embu和Kamujine的单产降低了52％和78％。在两个地点的两个季节中，间作模式均显着影响部分土地当量比（LER）值（p <0.0001）。

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