Pea-oat intercrops are superior to pea-wheat and pea-barley intercrops
Pea-oat intercrops are superior to pea-wheat and pea-barley intercrops
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DOI：
10.1080/09064710701412692
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发表时间：
2008-01-01
影响因子：
1.6
通讯作者：
Lauk, E.
中科院分区：
文献类型：
--
作者：
Lauk, R.;Lauk, E.
在爱沙尼亚进行了为期三年的田间试验，以确定豌豆（Pisum sativum L.）和小麦（Triticum aestivum L.），燕麦（Avena sativa L.）和大麦（Hordeum distichon L.）最适合混播栽培，豌豆对谷物产量潜力的影响。在谷类种子中包含豌豆及其种子密度的增加导致谷类组分的谷物产量大幅下降。这些下降的原因是形成较小的谷物时，间作豌豆。豌豆在谷类作物中的加入及其种子密度的增加导致谷类谷物中蛋白质含量的大幅增加。在大麦和燕麦的谷物蛋白质含量的增加是最低的三种谷物。与此同时，谷物单位面积的最大蛋白质产量是从纯作物的地块中获得的。在与豌豆的混合中，谷物消耗的氮量减少，间作中单位面积谷物的蛋白质产量减少。由于豌豆成分，豌豆-谷物混合物在蛋白质产量方面优于谷物单一作物。豌豆-谷物混合物特别适合有机耕作的条件，应向农民推荐，因为它们确保在没有氮肥的土壤上获得相对较好的收成和较高的蛋白质产量。总之，研究表明，在三种组合中，豌豆-燕麦混合间作的籽粒产量和蛋白质产量最高。
A three-year field experiment was conducted in Estonia to determine which combinations of pea (Pisum sativum L.) and wheat (Triticum aestivum L.), oats (Avena sativa L.) and barley (Hordeum distichon L.) were most suitable for mixed cultivation and the effect of pea on the yield potential of cereals. The inclusion of pea in cereal seeds and the increasing of its seed density led to substantial decreases in the grain yields of the cereal component. The reason for these decreases was the formation of smaller grains in cereals when intercropped with pea. The inclusion of pea in a cereal crop and the increasing of its seed density led to substantial increases in the protein content of the cereal grains. In barley and oats the increases in grain protein content were the lowest of the three cereals. At the same time, the maximum protein yield per area unit in cereals was obtained from plots of pure crops. In a mix with pea, the amounts of nitrogen consumed by cereals decreased and the protein yield of cereals per area unit were reduced in intercrops. Pea-cereal mixes had an advantage over cereal sole crops with regard to protein yield, due to the pea component. Pea-cereal mixes are particularly suitable for the conditions of organic farming, and should be recommended to farmers, as they ensure a relatively good harvest and high protein yield on soil without nitrogen fertilizers. In conclusion, the study showed that, of the three combinations, pea-oat mixed intercrops gave the highest yield of grain and protein yields.