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首页> 外文期刊>Egyptian Journal of Agronomy >Yield and land equivalent ratio of intercropped soybean with maize under different intercropping patterns and high population densities.
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Yield and land equivalent ratio of intercropped soybean with maize under different intercropping patterns and high population densities.

机译：不同间作模式和高人口密度下间作大豆与玉米的产量和土地当量比。

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Two experiments were conducted at Gemmeiza Agricultural Experiments and Research Station, ARC, El-Gharbia Governorate, during 2006 and 2007 summer seasons to increase intercropped soybean and maize yields. Alternating ridges (70 cm/ridge) between maize and soybean were used as 2:2 and 2:4, respectively, soybean was grown in alternating ridges by two rows/ridge (N) in normal distribution (2:2 and 2:4). in addition to single row on the other adjacent side of maize ridges to increase the density of the intercropped soybean plants (H) by about 25% than normal density (N)3 while, four rows of soybean were planted on the ridge (140 cm/ridge) and maize was grown on middle of the ridge in mixed intercropping pattern. Solid plantings included three and two patterns for maize and soybean plants, respectively. Soybean plants were grown in 2 plants/hill (15 cm apart), while, maize was distributed in two plants/hill (30 cm apart) and four plants/hill (60 cm apart) using maize variety T.W.C. 310 and two soybean varieties, i.e. Giza 22 and Giza 111. A split split plot distribution in randomized complete block design with three replications was used. Cropping systems (intercropping and solid) were randomly assigned to the main plots, soybean varieties were arranged in sub-plots and distributions of maize plants were arranged in sub sub-plots. For soybean plants, solid planting patterns had higher values for all the studied soybean parameters as compared with those of intercropping patterns. For intercropping cultures, the intercropping pattern 2:4 (H) gave the highest seed yield/feddan as compared with those of normal population of 2:4 (N) and other patterns. The soybean variety Giza 22 had higher values for all the studied soybean parameters than Giza 111. All the studied parameters of intercropped soybean were increased by doubling distance between hills of maize plants from 30 to 60 cm under intercropping patterns. For maize plants, solid planting in higher density had higher grain yield/feddan as compared with those of mixed and alternating ridges. Total leaf area and yield/plant of intercropped maize were higher than those of solid maize under the same density of maize in the ridges. Intercropping pattern 2:2 (N) gave the highest grain yield/feddan as compared with the other intercropping patterns. Wider distance between hills of maize plants (60 cm apart) gave higher values for all the studied maize characters. Increasing soybean plant densities under intercropping patterns (2:2 "H" and 2:4 "H") caused significant increments in soybean yield/feddan and land equivalent ratio without significant reduction in maize yield/feddan. LER ranged from 1.18 to 1.56. The intercropping culture increased the total and net returns as compared to recommended solid plantings of both crops. The net return of intercropped maize with soybean varied between L.E. 1550 and 2561 per feddan as compared with recommended solid planting of maize (L.E. 1621). Mixed and 2:2 (N) intercropping patterns gave higher values of net return (L.E. 2561 & 2407) when growing maize in wide distance between hills (4 plants/hiil at 60 cm apart) and using soybean variety Giza 22.
机译：在2006年至2007年夏季，分别在El-Gharbia省ARC的Gemmeiza农业试验和研究站进行了两项试验，以增加间作大豆和玉米的单产。玉米和大豆之间的交替垄（70厘米/垄）分别用作2：2和2：4，大豆以交替的垄以两排/垄（N）的正态分布（2：2和2：4）生长）。除了玉米垄另一侧的单行种植，使间作大豆植株的密度（H）比正常密度（N） 3 高约25％，而四排大豆种植在垄上（140厘米/垄），玉米在垄中间以间作模式种植。固态种植分别包括玉米和大豆的三种和两种模式。大豆植物以2种植物/山（间隔15厘米）生长，而玉米则使用玉米品种T.W.C分布在2种植物/山（间隔30厘米）和4种植物/山（间隔60厘米）中。 310和两个大豆品种，即吉萨22和吉萨111。在三个完整重复的随机完整块设计中使用了分割分割图分布。种植系统（间作和实体）被随机分配到主要地块，大豆品种被安排在子图中，玉米植物的分布被安排在子图中。对于大豆植物，与间作模式相比，所有研究的大豆参数的固态种植模式均具有更高的值。对于间作文化，与2：4（N）和其他模式的正常种群相比，间作模式2：4（H）产生最高的种子产量/结实率。大豆品种Giza 22的所有研究大豆参数值均高于Giza111。通过在间作模式下将玉米植株之间的距离从30 cm增加到60 cm，所有间作大豆的研究参数都会增加。对于玉米植物，与混合垄和交替垄相比，高密度的固态种植具有更高的谷物产量/单产。在相同的垄密度下，间作玉米的总叶面积和单株产量高于固态玉米。与其他间作模式相比，间作模式2：2（N）的单粒谷物产量最高。玉米植株之间更宽的距离（相距60厘米）为所有研究的玉米特性提供了更高的价值。间作模式（2：2“ H”和2：4“ H”）下大豆植物密度的增加导致大豆单产/联邦和土地当量比的显着增加，而玉米单产/联邦的显着降低。 LER为1.18至1.56。间作栽培与两种作物的推荐实地种植相比增加了总收益和净收益。间作玉米与大豆的净收益在L.E.与推荐的玉米固态播种相比，每头丹的产量分别为1550和2561（L.E。1621）。当在丘陵之间的较远距离（相距60 cm处有4株植物/耕种）上种植玉米并使用大豆品种Giza 22时，混合和2：2（N）间作模式可提供更高的净收益（L.E. 2561和2407）。

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