摘要
以北林202紫花苜蓿(Medicago sativa cv.Beilin 202)为材料,通过田间试验,研究了不同施肥水平对供试品种的株高、产量及营养品质的的影响。结果表明:在施氮水平下,磷、钾肥配施对紫花苜蓿的产量影响显著,氮、磷、钾肥配施显著增加了株高,提高了紫花苜蓿的产量,其中,N_(30)P_(120)K_(100)(N 30kg/hm^2+P_2O_5120kg/hm^2+K_2O 100kg/hm^2)处理下的苜蓿的鲜草、干草产量最高,分别达69 862.9和13 510.5kg/hm^2。氮、磷、钾配合施用显著改善了紫花苜蓿的营养品质。与对照比较,氮、磷、钾配施后北林202紫花苜蓿的粗蛋白、粗脂肪、粗灰分含量显著增加,酸性洗涤纤维和中性洗涤纤维含量显著降低。试验表明N_(30)P_(120)K_(100)配施组合是试验区北林202紫花苜蓿生产适宜的配施方案。
Field experiments were conducted to study the effects of different fertilization levels on plant height,yield and nutritional quality of‘Beilin 202’alfalfa.The results showed that under a certain level of N fertilizer,the combined application of P fertilizer and K fertilizer had a significant effect on alfalfa yield.The combined application of N,P and K fertilizer significantly increased plant height and alfalfa yield.The fresh grass and hay yield of alfalfa under N30 P120 K100(N 30 kg/hm^2+P2O5 120 kg/hm^2+K2O 100 kg/hm^2)treatment was the highest.They were 69 862.9 kg/hm^2 and 13 510.5 kg/hm^2 respectively.The combined application of N,P and K fertilizer significantly improved the nutritional quality of alfalfa.Compared with the control,the contents of crude protein,crude fat and crude ash in‘Beilin 202’alfalfa increased significantly,while the contents of ADF and NDF decreased significantly after combined application of N,P and K fertilizer.The results showed that the N30 P120 K100 fertilizer combination was the suitable fertilizer formula for the production of‘Beilin 202’alfalfa in the trial area.
作者
马宁
李亚娇
苏生
马培杰
韩永芬
孟军江
付薇
覃涛英
MA Ning;LI Ya-jiao;SU Sheng;MA Pei-jie;HAN Yong-fen;MENG Jun-jiang;FU Wei;QIN Tao-ying(Institute of grass industry of Guizhou Academy of Agricultural Sciences,Guiyang 550006,China;Guizhou sunshine grass industry science and Technology Co.,Ltd.,Songtao 554100,China;Guizhou Jinnongfuping Ecological Agricultural and Animal Husbandry Science and Technology Co.,Ltd.,Songtao 554100,China)
出处
《草原与草坪》
CAS
CSCD
2018年第6期48-54,共7页
Grassland and Turf
基金
贵州省星火计划项目"北林202紫花苜蓿新品种在乌蒙山区的推广应用"(黔科合成转字[2015]5325-2号)
贵州省科研机构服务企业行动计划项目"贵州牧草资源产业化开发及生态畜牧业科技支撑行动"(黔科合平台人才[2016]5713)
贵州省科技计划项目:贵州山区牧草产业化生产技术研究集成与应用(黔科合重大专项字(2014)6017号资助
