基于模型对柠条平茬最佳时间的确定  

Determination of the Best Time of Moving of Caragana korshinskii Kom.Based on Model

作　　者：温学飞[1,2] Wen Xuefei(Institute of Desertification Control,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan,Ningxia 750002;Ningxia Key Laboratory of Sand Control and Soil and Water Conservation,Yinchuan,Ningxia 750002)

机构地区：[1]宁夏农林科学院荒漠化治理研究所,宁夏银川750002 [2]宁夏防沙治沙与水土保持重点实验室,宁夏银川750002

出　　处：《宁夏农林科技》2021年第2期1-5,共5页Journal of Ningxia Agriculture and Forestry Science and Technology

基　　金：宁夏回族自治区农业科技自主创新专项“柠条生物发酵饲料加工关键技术研究”(NKYG-19-02);世界银行贷款宁夏黄河东岸防沙治沙项目“柠条林的经营和可持续利用研究”(P121289)。

摘　　要：根据柠条生长的特点,即生长速率随灌木林龄的变化呈近似正态分布的特征曲线,生长指标符合Logistic方程,本文以Logistic生长函数为例具体推导了柠条灌木林平茬时间的确定,结果表明:柠条首次平茬适宜期在8~11 a;适宜平茬周期以3~4 a为佳;最佳平茬月份6—7月(果熟期);平茬作业采取隔1带或隔2带平茬,2~3 a全部平茬1次。According to the growth characteristics of Caragana korshinskii Kom.,the growth rate of Caragana korshinskii Kom.is approximately normal distribution characteristic curve with the age of shrub.The growth index of Caragana korshinskii Kom.accords with logistic equation.Taking logistic growth function as an example,this paper explains the specific derivation process of determination method of moving time of Caragana korshinskii Kom..The results showed that the suitable period for the first moving of Caragana korshinskii Kom.was 8~11 a;the suitable period of Caragana korshinskii Kom.was 3~4 a;the best moving month was June to July(fruit ripening period);the moving operation was carried out at intervals of 1 or 2 strips,and all of them were moved once in 2~3 a.

关 键 词：柠条 平茬 最佳时间 LOGISTIC 

分 类 号：S793.3[农业科学—林木遗传育种]