晒红烟烟碱含量的研究

Study on the Nitrogen Fixation Characteristics of the Same Latitude and Differently Evolutionary Types of Soybean

摘要:

本文主要研究晒红烟烟碱含量,结果表明:①烟碱含量与品种的农艺性状有关,即与株高、茎围、叶数呈负相关,与节距、腰叶长宽比呈正相关。③烟碱含量与烟叶成熟期的气象因素有关,即与积温、日照时数呈正相关,与降雨量呈负相关。③烟碱含量与栽培措施有关,即随打顶期的提早、留叶数的减少、施氮肥的增加而增多。④烟碱含量的变化规律:烟碱含量在苗期随烟苗的生长逐渐增多,在大田生长期表现减少,打顶以后则明显增多,到过熟期逐渐减少。不同部位烟叶烟碱含量,在大田生长期自下而上逐渐减少,在成熟期自下而上逐渐增多,在过熟期无明显规律。

Abstract:

A series of nitrogen fixation characteristics, such as nodule nitrogen fixation activity, nodule ureide content and young stem ureide content were studied in the same latitude and differently evolutionary types of soybean.The results indicated that the nodule nitrogen fixation activity, nodule and young stem ureide contents were the highest in cultivated soybean and the lowest in wild soybean.The nodule nitrogen fixation activity, nodule and young stem ureide contents of semi-cultivated soybean were higher than those of semiwild soybean.