黑龙江北部寒区苜蓿丰产栽培技术研究

Study on Planting Techniques of Alfafa Harvest in North Frigid Area of Heilongjiang

在黑龙江省逊克县车陆乡,应用正交试验设计对苜蓿进行行距、灌水、施肥种类、施氮肥试验。试验结果表明,行距以15cm处理产草量最高,每公顷产干草6483.3kg,比45cm处理增产干草10.04%;在苜蓿返青期灌水1次,增产效果最好,优于其他处理;施磷酸二铵150kg/hm2产干草6928.7kg/hm2,增产效果最佳,比施复合肥150kg/hm2增产干草22.6%(P<0.01)和施有机肥22500kg/hm2增产干草11.04%,施有机肥比施复合肥增产10.5%;施尿素75kg/hm2增产效果好于施尿素112.5kg/hm2和150kg/hm2处理;处理1(行距15cm,灌水1次,施磷酸二铵150kg/hm2,施氮肥75kg/hm2)产干草7637kg/hm2,显著高于其他处理,增产6.8%￣48.7%,比处理3和处理4、5、8、9、7表现增产差异达到极显著或显著水平。

The experiment were conducted at chelu country of Xunke in Heilongjiang to study on effects of row space,irrigating,different fertilizer and nitrogen on alfalfa grassland.The result showed that the treatment with row space 15 cm was the highest for yield of alfalfa,the dry weight was 6 483.3 kg/hm2,and increased by10.4% than that of the row space 45 cm;The effect of increase production of irrigating one time when alfalfa returning green was the best.The yield of alfalfa grassland Manuring ammonium phosphate 150 kg/hm2 was 6 928.7 kg/hm2,and was the highest in different manuring,higher by 22.6% than that of manuring compound fertilizer and by 11.04% than that of manuring barn yard manure.The yield of alfalfa grassland manuring organic fertilizer was higher than that of applying compound fertilizer by 10.5%.The yield of applying carbamide 75 kg/hm2 was higher than that of 112.5 kg/hm2 and 150 kg/hm2.The yield of treatment 1(row space 15cm,irrigating one,apply ammonium phosphate 150kg/hm2 and urea 75 kg/hm2)waw 7 637 kg/hm2 and higher than other treatment,increasing by 6.8%~48.7%.