摘要
通过N、P、K肥单施及其不同配比混施,研究了施肥对提高特高多花黑麦草初级生产力的影响。结果表明,N、P、K肥单施和不同配比混施均能提高特高多花黑麦草的鲜草产量,但混施的增产效果比单施更好。施用尿素400kg/hm2,过磷酸钙500kg/hm2,硫酸钾200kg/hm2,产量最高,播种后8周达到11723.3kg/hm2。
Through fertilizing single fertilizer of nitrogen potassium or phosphorus and different ratio of the three fertilizer studying the fertilization on effect of the primary productivity of tetragold annual ryegrass.Results showed that crossed or single fertilizing nitrogen,potassium and phosphorus all can increase the yield of the fresh grass,but the effect of mixed fertilizer was better than that of single fertilizer.Fertilizing urea400kg /hm 2 ,lime saperphospate500kg /hm 2 or potassium sulfate200kg /hm 2 ,the yield was the highest reaching11723.3kg /hm 2 after tetragold annual ryegrass8weeks.
出处
《四川畜牧兽医》
2003年第12期22-23,共2页
Sichuan Animal & Veterinary Sciences
基金
云南省十五科技攻关项目"金沙江流域退耕还林(竹)还草综合试验示范"(编号:2001NG55)。
关键词
施肥
特高多花黑麦草
初级生产力
影响因素
tetragold annual ryegrass
fertilization treatment
primary porductivity
