毕业设计（论文）毕业设计（论文）干旱胁迫对甘蔗生长及土壤养分的干旱胁迫对甘蔗生长及土壤养分的影响影响学院（系）学院（系） 农农 学学 院院 专专 业业 农学农学 班班 级级 2010 级级 2 班班 学学 号号 1031100127 学生姓名学生姓名 指导教师指导教师 二零一四年五月二零一四年五月- i摘要摘要为探明不同供水量对甘蔗的生长发育和甘蔗的土壤养分含量的影响，本文探以不同的供水量作为对照组，以不同的甘蔗品种为主处理，不同的水分供给为副处理对甘蔗的生长发育及土壤养分含量的影响通过对不同处理间，在收获前测定有效茎数，株高，茎径，产量，土壤中碱解 N、速效 P、速效 K 的含量、土壤有机质含量、土壤 pH 值进行对比分析，得出不同供水量对甘蔗的生长发育的影响，并通过收获期考种所得到的产量性状分析不同供水量对甘蔗产量的影响试验结果表明：1、与正常供水的处理相比，干旱胁迫处理对甘蔗的产量有减产的作用经干旱处理后，参试品种出现了不同程度上的减产，不同品种的减产率不同各品种的减产率顺序：柳城 05—129 号> ROC22 号>福农 40 号>粤甘 24号>福农 38 号>ROC16 号。
其中，柳城 05—129 号品种减产的情况最为严重，ROC16 号品种的产量最低，福农 40 号品种的产量最高 2、与正常供水的处理相比，干旱胁迫处理对甘蔗的有效茎数有增加的作用各参试品种的有效茎数损失率顺序：ROC16 号>粤甘 24 号>福农 38 号>ROC22 号>福农 40 号>柳城 05—129 号干旱胁迫处理的平均有效茎数比正常处理的提高了 2.83%，其中，福农 40 号品种的有效茎数最多，粤甘 24 号品种的有效茎数变化幅度最小3、与正常供水的处理相比，干旱胁迫处理对甘蔗的株高有变矮的作用各品种的株高的损失率顺序为：粤甘 24 号>福农 38 号> ROC16 号>福农 40号> ROC22 号>柳城 05—129 号，柳城 05—129 号品种的蔗株损失率处于较低的水平，粤甘 24 号损失最严重，福农 38 号品种的株高最高 4、与正常供水的处理相比，干旱胁迫处理对甘蔗的茎径有变细的作用各品种的茎径损失率顺序：福农 40 号>ROC16 号>粤甘 24 号>福农 38 号>柳城 05—129 号>ROC22 号其中，福农 40 号品种的茎径最粗，同时，福农40 号品种也是茎径损失率最高的。
柳城 05—129 号品种的茎径变化幅度最小5、土壤中的碱解 N、速效 P、速效 K 含量，土壤 pH，土壤有机质含量跟供水量没有什么明显的相关性正常供水处理的土壤碱解 N、速效 P 和速效 K 平均含量相比干旱胁迫处理的均较高，参试品种的土壤中，碱解 N 平- i均含量为 43.9mg/kg；速效 K 平均含量为 92.4mg/kg；速效 P 平均含量为23.6mg/kg；土壤 pH 的平均值为 6.03；有机质平均含量为 22.91%关键字关键字：干旱胁迫 甘蔗 产量 土壤 - iThe Drought stress on Sgarcane Growth and Soil NutrientsABSTRACTIn order to investigate the different water supply on the growth and development of sugar cane，As well as to explore the effects of different water supply on soil nutrient content of sugar cane，This paper discusses the different water supply as a control group, Different varieties of sugarcane-based treatment，The water supply for the different developmental effects on sugarcane growth and soil nutrient content deputy processing。
Through the different treatments，Determination of the effective number of stems before harvest, plant height, stem diameter, yield, alkaline hydrolysis N, available P, available K content of soil organic matter, soil pH soils were analyzed，Effect of different ways to draw water for the growth of sugar cane，And seed yield traits obtained by harvesting term examination of ways to analyze the impact of different supply sugarcane production. The results showed that: 1, Compared with the normal water treatment, drought stress on sugarcane production has cut role.After the drought, there has been production tested varieties varying degrees, the different production rates of different varieties. Production rate of the order of all varieties: liucheng No. 05-129> No. ROC22> Funong 40> Guangdong Gan 24> Funong No. 38>No. ROC16.Among them, the situation liucheng No.05-129 varieties most severe cuts, the highest yield minimum production number ROC16 varieties Funong 40 varieties. 2, Compared with the normal water treatment, drought stress on sugarcane stalk number has increased role. Each Varieties effective loss rate of the order of the number of stems: No.ROC16> Guangdong Gan 24> Funong 38> No. ROC22> Funong 40> liucheng No. 05-129. Average effective number of stems drought stress than normal processing increased by 2.83%, the effective maximum number of stems which Funong 40 varieties, the magnitude of change in the effective number of stems Guangdong Gan 24 minimum varieties.3、Compared with the normal - isupply of processed sugarcane drought stress on plant height grow shorter role.Loss rate of the order of the height of the varieties are:Guangdong Gan 24> Funong 38> No. ROC16> Funong No. 40> No. ROC22> liucheng No. 05-129, Liucheng No. 05-129 sugarcane varieties strains loss rate at a low level, Guangdong Gan on the 24th worst loss, the maximum height Funong 38 varieties. 4,Compared with the normal water treatment, drought stress on sugar cane stalk diameter have thinning effect.Loss rate of the order of stem diameter of all varieties:Funong No. 40> No. ROC16> Guangdong Gan 24> 38 Funong> liucheng No. 05-129> No. ROC22.Among them, the stem diameter Funong 40 varieties of the most coarse, and also the highest rate of loss of stem diameter. No. 05-129 liucheng stem diameter changes the smallest breed.5、The soil alkaline hydrolysis N, available P, available K content, soil pH, soil organic matter content with the water supply is no obvious correlation. Normal alkali soil water treatment solution N, were higher average levels of available P and K compared to drought stress treatment,Varieties soil available N average content of 43.9mg/kg; average content available K was 92.4mg/kg; available P average content of 23.6mg/kg. The average soil pH of 6.03; organic matter content of 22.91% on average.Keywords：Drought stress Sugarcane Yield Soil - i目录目录摘要摘要 I IABSTRACT IIII目录目录I一、前言一、前言 . .1 1（一）研究目的和意义 1 （二）国内外研究动态 2 （三） 尚需进一步研究问题 .3 （四）本文主要研究的问题 3二、材料与方法二、材料与方法 4 4（一）实验材料 4 （二）实验方法 4 （三）测定项目和方法 5 （四）室内分析项目 6三、三、 结果与分析结果与分析 7 7（一）不同水分处理对不同品种的甘蔗的株高的影响 7 （二）不同水分处理对不同品种的甘蔗的有效茎数的影响 7 （三）不。