论文部分内容阅读
采用两个Ｌ９（３４）正交表安排黑麦草良种Ｇｏｒｄｏ、Ｌｉｐｏ、２１２、Ｌｉｍｅｌａ、Ａｕｂａｄｅ和Ｄｅｒｂｙ等６个的正交试验结果说明，因素的水平较佳处理组合、每００６７ｈｍ２的鲜草产量和选择丰产栽培品种的次序为：Ｇｏｒｄｏ的Ｂ３Ｃ３Ｄ３为１３４０６７，Ａｕｂａｄｅ的Ｂ２Ｃ３Ｄ１为１３２６９０，Ｌｉｍｅｌａ的Ｂ３Ｃ３Ｄ３为１２９８４５，Ｌｉｐｏ的Ｂ２Ｃ３Ｄ１为１２９７７８，２１２的Ｂ１Ｃ３Ｄ２为１１５４０１和Ｄｅｒｂｙ的Ｂ３Ｃ２Ｄ１为８０３５６ｋｇ，皆达到高产水平，３和２水平极显著或显著高于１水平的产草量。因此认为，黑麦草丰产栽培的关键技术有三，一是在标准用种量的基础上加大标准用种量的２５％～５０％作为实际播种量，以确保获得足够的基本苗；二是采取撒播下种；三是要较高施肥水平。
Orthogonal tests of six Lolium cultivars, Gordo, Lipo, 212, Limela, Aubade and Derby, were carried out using two orthogonal L9 (34) orthogonal tables. The results showed that the optimum level of the factors was 0.67hm2 fresh grass The order of yield and selection of high yield cultivars was: 13406.7 for B3o3 of Gordo, 13269o for B2C3D1 of Aubade, 12984.5 for B3C3D3 of Limela, 12977.8 for Lipo, 115401 for B1C3D2 of 212o and Derby’s B3C2D1 was 8035 6kg, both reached high levels of yield, and the levels of 3 and 2 were significantly or significantly higher than those of 1 level. Therefore, the key technologies of ryegrass high yield cultivation are three, one is to increase the standard with the amount of 25% to 50% of the standard used as the actual seeding rate to ensure adequate basic seedlings; the second is to take Sow the next species; the third is to higher levels of fertilization.