不同播种时间对黑麦草与苜蓿混播种植下生产性能的试验研究

Study on Production Performance of Ryegrass and Alfalfa Mixed Planting at Different Sowing Time

中文关键词: 黑麦草  苜蓿  混播种植  不同播种时间  生产性能

英文关键词: ryegrass  Alfalfa  Mixed planting  Different sowing time  production performance

中文摘要:

      为了探索陕西高海拔地区黑麦草与苜蓿进行混播种植栽培条件，通过不同播种时间对黑麦草与苜蓿混播种植下生产性能的试验。结果表明：冬牧70黑麦品种的出苗时间、分蘖时间及返青时间等随着播种时间的延长而延长，其孕穗时间、抽穗时间、开花时间及刈割时间在8月中旬与9月中旬相一致，冬牧70黑麦品种的适宜播种时间以9-10月，9月下旬较好；甘农9号苜蓿的出苗时间、现蕾时间、初花时间及头茬刈割时间随着播种时间的延长而延长，适宜播种时间以9月下旬较好；冬牧70黑麦草在3个不同的播种期株高和株数存在极显著的差异（P＜0.01），其倒伏率均为0%，在9月中旬种植的黑麦草产草量性状最优；甘农9号一茬与二茬苜蓿亩均鲜草量和亩均干草量在3个不同的播种期存在极显著的差异（P＜0.01），在9月中旬种植的苜蓿产草量性状最优。重要试验结果为陕西高海拔地区黑麦草与苜蓿进行混播种植栽培技术，提高饲草的产量和质量具有重要的指导作用。

英文摘要:

      In order to explore the cultivation conditions of mixed planting of ryegrass and alfalfa in high altitude areas of Shaanxi, the production performance of mixed planting of ryegrass and alfalfa was tested at different sowing times. The results showed that the seedling emergence time, tillering time and turning green time of Dongmu 70 rye varieties were prolonged with the extension of sowing time, and their booting time, heading time, flowering time and cutting time were consistent in mid-August and mid-September. The suitable sowing time of Dongmu70 rye varieties was September to October, and the late September was better; The seedling emergence time, bud emergence time, first flowering time and first cutting time of Gannong 9 alfalfa increased with the extension of sowing time, and the suitable sowing time was in late September; There were significant differences in plant height and number of ryegrass（P＜0.01）; The average fresh grass and dry grass per mu of the first and second crops of Gannong 9 alfalfa were significantly different at three different sowing dates（P＜0.01）. The important test results have an important guiding role for the mixed planting technology of ryegrass and alfalfa in Shaanxi high altitude areas to improve the yield and quality of forage.