Study On Fertilization And The Rule Of Requirement Of Fertilization Of Xin Hai 16 Super Sea Island Cotton

Abstract:Usage of soil nutrient of absorbed experiment,pot experiment,field test andlaboratory analysis research fertilization and the rule of requirement of fertilization ofXin Hai 1 6 super Sea Island cotton through the systematic approach for soil nutrientstatus evaluation fertilization．The absorbed ability of soil of absorbed experiment tonutrient elements iS used in soil fertility evaluation and fertilizers recommend action．When the nutrient status．1imited nutrient factors in soil and afirected degree of limitednutrient factors to crops yield have been known completely,it can ensure the Success offield experiment and the reliability,and value of the data of field experiment． By analysis investigation of cotton reproduction cycle,collection plants,analysisquantities of requirement and equation of N,P and K through periods of seeding,florescence．boll and opening of bolls 0f Xin Hai 1 6．Recommend optimum quantity offertilization,yield and analysis quantify of cotton fiber．The results of experiment show:From florescence to bolls grow fast,absorbing quantity of fertilization fully is period ofopening of bolls． Ensure the rate of absorption iS N:P205:K20 1:O．4:1．1,Its bio-yield iS Jess than other cottons．The maximum yield iS 1 655．2kg／ha。fertilization quantities of themaximum yield are N268．4kg／ha,P205162．9kg／ha,the rate of N:P20s:K20 is1:O．6:0．3．The economic yield iS 1635．4 kg／ha,recommend optimization N,P205,K20ofqualities are N193．2kg／ha,P205137．1kg／ha,K2058．0kg／ha,the rate ofN:P20s:K20 isl:O．7:0．3．and N fertilization fertilize moderate period: 60 percent OfN fertilization and P fertilization,K fertilization and Zn,Mn,B micronutrients as bottom application before cultivate．40 percent of total N fertilization fertilize before the first irrigation．Fertilization affects fiber quality of Xin Hai 1 6 but affect unobviously,heretic characteritself play an important role in quality．So moderate fertilization and suitable cultivate model combine are efficient measurers which ensure high yield excellent quality and stability character of Xin Hai 1 6．The results of research have important theory and practical of means for taking high yield high efficiency of a large are as Of Xin Hai 1 6．...