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1、武汉长江工商学院本科毕业论文（设计）任务书论文名称：中英文题目英文上中文下学院、专业：经济与商务外语学院英语语言文学学生姓名：指导教师：下达时间：2011年12月20日一、论文（设计）的选题意义（宋体小四行距1.5倍）学生填写二、论文（设计）的任务和基本要求（宋体小四行距1.5倍）教师填写inbuildinglawn,lawnbuiltingrowingseasonrequiredafterapplyingfertilizer.Coldseasongrassdressingtimeisbestinearly
2、springandfall.Afterthefirstgreen,canplayaroleinfacilitatingthegrowthofsecondinspring,aftertheweatherturnedhot,youshouldstopdressing.Fertilizationinautumnon9,October.Appliesfertilizerthetimeislatespringofwarm-seasongrasses.Inamonthor2monthsofgrowingseasonto
3、becaughtupwithfertilizer.Increasingthedensityoffoliage,improveresistancetosteppingon.Fertilizingshouldnotbelateforthelasttimeinmid-September.3,trimmingthelawnisthefocus,andisthemostintensivework.Trimcontrollawnheightofthetillers,increasingthedensityofleave
4、s,weedsandlawnneatandbeauty.Generallawntrimmedatleast4-5timesayear,pruneandtrimthenumberofheightisrelatedtotwofactors.Lowerthecuttingheightrequirements,pruningmoretimes.Leavesofgrassdensityandcoveragealsoincreaseswiththenumberoftrimandmore.Itshouldbenotedt
5、hatinaccordancewithregularmowingthegrasscuttingheight,whenupto1.5timestheheightofthegrass,trimtwicetimesthemaximumshallnotexceedthespecifiedheight.4,weedweedinvasionwillseriouslyaffectthequalityofthelawn,turflostuniformandneatappearanceandpurposeweedandgra
6、sscompetitionforwater,fertilizer,racetheSun,sothatobjectivegrassgrowthdecline,soweedisanessentialpartoflawnmaintenanceandmanagement.Thefundamentalmethodsofweedpreventionandremovalistherationalmanagementofwaterandfertilizer,grassgrowthpromotionpurposes,incr
7、easecompetitivenesswithweeds,andmultipletrim,suppressweedsinbuildinglawn,lawnbuiltingrowingseasonrequiredafterapplyingfertilizer.Coldseasongrassdressingtimeisbestinearlyspringandfall.Afterthefirstgreen,canplayaroleinfacilitatingthegrowthofsecondinspring,af
8、tertheweatherturnedhot,youshouldstopdressing.Fertilizationinautumnon9,October.Appliesfertilizerthetimeislatespringofwarm-seasongrasses.Inamonthor2monthsofgrowingseasontobecaughtupwithfertilizer.Increasingthed
