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首页> 外文会议>European Grassland Federation Symposium >Tetraploid red clover - in a pure stand or mixed with timothy?
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Tetraploid red clover - in a pure stand or mixed with timothy?

机译：四倍体红三叶草 - 在纯粹的立场或与蒂莫西混合？

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A field trial was performed at Jogeva FBI to study the possibilities of cultivation of tetraploid red clover (Trifolium pratense L.) Varte in a pure stand or mixed with timothy (Phleum pratense L.) Jogeva 54. The purpose of the study was to specify the impact of timothy admixture on the forage yield and quality, and its potential to influence these by defoliation. The results show that the cultivar Varte sown in a pure stand without nitrogen fertiliser ensures dry matter (DM) yield of 23-24 Mg ha~(-1) as a total of two crop years. Adding timothy to the mixture makes it possible to enhance the total yields of DM, digestible DM (DDM) and crude protein (CP), but spoils the herbage quality: contents of CP and DDM decline and the neutral detergent fiberincreases. Varte, predominating in the ley, enables to prolong the sward persistency from two to three harvest years and reduce the need for mineral nitrogen. Nitrogen application becomes beneficial by the 3rd harvest year of ley, when the proportion ofred clover has dropped below 70%.
机译：在Jogeva FBI进行了田间试验，研究了纯支架中四倍体红三叶草（Trifolium pratense L.）葡萄酒的可能性或与丘脑（Phleum pratense L.）Jogeva 54混合。该研究的目的是指明蒂莫西混合物对饲料产量和质量的影响及其对抗脱落的潜力。结果表明，在没有氮肥的纯支架中播种的品种葡萄酒确保了23-24 mg HA〜（-1）的干物质（DM）产率，共有两项农作物。向混合物中加入Timothy使得可以增强DM，可消化DM（DDM）和粗蛋白（CP）的总产量，但破坏牧草质量：CP和DDM的含量下降和中性洗涤剂纤维释放。 Varte，占优势在Ley，使得延长两到三年的草地持久性并减少对矿物氮的需求。氮申请受到LEY的第三次收获年份的有益，当时的三叶草降至70％以下。

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