【摘要】 对河南县天然草地 3个草地型进行追施尿素 (Ⅰ )、尿素 +复混肥 (Ⅱ )、复混肥 (Ⅲ )及喷灌试验 ,结果表明 :试验组 (Ⅰ )试验区内比试验区外可食鲜草产量增长 2 649.95kg hm2 ,提高 43.1 9% ;试验组 (Ⅱ )可食鲜草产量增长 2 35 4 .85kg hm2 ,提高 36.30 % ;试验组 (Ⅲ )可食鲜草产量增长 1 735 .42kg hm2 ,提高 2 9.66%。试验区内植物高度增高 ,植被盖度增加 ,草地植被结构发生了明显变化。更多还原

【Abstract】 After the experiment of apply fertilizer and irrigation with urea(Ⅰ),urea+Compound fertilizer(Ⅱ), compound fertilizer(Ⅲ) on the three types of common nature grassland in He Nan County, As result the output of the fresh grass in experimental area(Ⅰ)increased to 2649.95kg/ha, increased to 43.19%, The output of the fresh grass in experimental area (Ⅱ)incresed to 2354.85kg/ha, increased 36.30%, Output in experimental area(Ⅲ)increased to 1735.42kg/ha,increased 29.66%, On the structre of vegetation the height of the grass in experimental area incresed. After experiment the structure of vegtstion on the grass changed a lot.更多还原