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为了研究不同刈割期(拔节期、开花期、成熟期)和留茬高度(0,5,10,15,20 cm)对杂交臂形草产量和品质的影响,进行了杂交臂形草种植试验,测定了产量和品质指标。结果表明:拔节期留茬15 cm草产量最高,为每公顷232.00 t;其次为拔节期留茬20 cm,产量为每公顷217.64 t。营养含量均以拔节期表现最高。留茬高度对拔节期牧草主要营养成分含量无明显影响,拔节期粗蛋白、粗脂肪、粗纤维和粗灰分含量在留茬0 cm和15 cm时分别为13.08%、5.62%、25.79%、9.88%与12.20%、4.14%、28.63%和10.47%,无显著差异(P>0.05);但留茬15 cm时粗灰分含量显著高于留茬0 cm(P<0.05)。说明杂交臂形草的最佳刈割期为拔节期,最佳留茬高度为15 cm。
In order to study the effects of cutting (jointing, flowering, maturity) and stubble height (0, 5, 10, 15 and 20 cm) on the yield and quality of hybrid armillaria, hybrid armilla Test, measured the yield and quality indicators. The results showed that the maximum yield of stubble at 15 cm was 232.00 t per hectare at jointing stage, followed by 20 cm stubble at jointing stage and 217.64 t per hectare. Nutritional content are the highest performance at jointing stage. The stubble height had no significant effect on the main nutrients of jointed grass, the contents of crude protein, crude fat, crude fiber and crude ash at jointing stage were 13.08%, 5.62%, 25.79% and 9.88% And 12.20%, 4.14%, 28.63% and 10.47%, respectively (P> 0.05). However, the crude ash content of stubble at 15 cm was significantly higher than that of stubble at 0 cm (P <0.05). The results showed that the optimal cutting period of hybrid armilla was jointing stage and the best stubble height was 15 cm.