【作者】 杨明君；

【导师】 陈光辉； 彭友林；

【作者基本信息】 湖南农业大学 ， 作物， 2010， 硕士

【摘要】 青饲玉米由于具有营养价值高、非结构性碳水化合物含量高、木质素含量低、单位面积产量高等优点和茎、叶、穗均可利用,已经发展成为一种重要的饲料作物。本研究选用青饲玉米“白顶一号”作为研究对象,通过田间对比试验、性状考察分析和数理统计分析,研究了不同施氮量和丰产剂对青饲玉米“白顶一号”生长发育及产量的影响。主要研究结果如下：1、不同施氮水平对青饲玉米“白顶一号”生长发育及产量存在显著影响。每小区施用0.1Kg尿素处理条件下叶片的数量、主茎生长量、茎直径、小区茎总产量、小区叶总产量、小区总产量分别为13.9片、190.5cm、1.98cm、13.28Kg、17.57Kg、30.85Kg；每小区施用0.15Kg尿素处理条件下上述各值分别为12.2片、192.5cm、2.18cm、15.33Kg、20.92Kg、36.25Kg；每小区施用0.2Kg尿素处理条件下上述各值分别为14.5片、203.6cm、2.3cm、20.09Kg、24.12Kg、44.21Kg。高氮水平处理各性状具有明显的正向优势,每小区施用0.2Kg尿素有利于促进植株的生长发育,使其叶的数量最多,茎的高度最高、直径最大,叶重及茎重最高,整个小区产量最高,其产量比使用0.1kg尿素处理的增产43.3%。2、施用丰产剂对青饲玉米“白顶一号”的生长发育和产量性状产生显著影响。施用丰产剂处理条件下青饲玉米“白顶一号”叶片的数量、主茎生长量、茎直径、小区茎总产量、小区叶总产量、小区总产量分别为15.47片、185.67cm、2.44cm、27.84Kg、17.58Kg、45.42Kg,而对照未施用丰产剂处理条件下上述各值分别为13.6片、205cm、2.12cm、14.56Kg、15Kg、29.56Kg。施用丰产剂处理植株叶片的数量增多,茎矮化、变粗,叶重及茎重增加,提高小区产量,施用丰产剂处理比不施用丰产剂产量提高53.65%。说明在青饲玉米“白顶一号”的栽培过程中,增加氮肥的施用量和增施丰产剂有利于其生长发育和生物产量提高。更多还原

【Abstract】 Green Forage Maize has the merits of high nutritive value、non-structural carbohydrates、low lignin and large yield per unit area。It’s stem、leaf and Fringe all could be used。So that Green Forage Maize became one of some important forage. In this study, Green Forage Maize "Bai ding 1"was selected as research object to study the effects of growth and yield of Green Forage Maize on different nitrogen fertilizer rate and Fengchanji by field experiment of comparison、Character Analysis and the Mathematical Statistic Analysis. The main research results were as follows:1.The different nitrogen fertilizer rate had significant effect on growth and yield of Green Forage Maize "Bai ding 1"。The number of leaves、main stem growth、stem diameter、total stem yield per and total yield per were 13.9、190.5cm、1.98cm、13.28 kg、17.57 kg and 30.85 kg respectively when the Green Forage Maize "Bai ding 1"was treated with 0.1 kg per test plot. When it was treated with 0.15 kg per test plot, these values as mentioned above were 12.2、192.5 cm、2.15cm、15.33 kg、20.92 kg and 36.25 kg respectively. When it was treated with 0.20 kg per test plot, such values were 14.5、203.6 cm、2.3cm、20.09 kg、24.12 kg and 44.21 kg respectively. It is shown that when the Green Forage Maize was treated with 0.2kg urea per test plot, it is conductive to the plant growth with the most number of leaves, the highest of stem, heaviest of leaves and stem. The yield is 43.3% more than that with 0.1kg urea per plot.2. Treatment with Fengchanji had significant effect on growth and yield of Green Forage Maize "Bai ding 1"。The number of leaves、main stem growth、stem diameter total stem yield per and total yield per were 15.47、185.67cm、2.44cm、27.84 kg、17.85 kg and45.42 kg respectively when the Green Forage Maize "Bai ding 1"was treated with Fengchanji. But The number of leaves、main stem growth、stem diameter、total stem yield per and total yield per were 13.6、205cm、2.12cm、14.56 kg、15 kg and29.56 kg respectively when the Green Forage Maize "Bai ding 1"was not treated with Fengchanji. It is shown that when treat with the Fengchanji it can promote plant growth as well, with the most number of leaves, and makes stem stature and thicken, leaves and stems heavy, yield increases. The yield is 53.65% more than that without Fengchanji.All the results suggested that increasing nitrogen rates and Fengchanji conductive to the plant growth and biological yield in Process of Cultivation of Green Forage Maize "Bai ding 1".更多还原