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中国农学通报 ›› 2016, Vol. 32 ›› Issue (4): 5-8.doi: 10.11924/j.issn.1000-6850.casb15090045

• 林学 园艺 园林 • 上一篇    下一篇

磷肥对马尾松低产林幼林生长的影响

赵敏冲1,赵 华2,刘建忠1,宋传生1   

  1. (1贵州省林业调查规划院,贵阳 550003;2贵州省林业厅,贵阳 550003)
  • 收稿日期:2015-09-10 修回日期:2015-09-29 接受日期:2015-10-16 出版日期:2016-02-01 发布日期:2016-02-01
  • 通讯作者: 赵敏冲
  • 基金资助:
    贵州省科技计划项目“贵州省低产低效林改造技术研究”(黔科合NY字[2011]3078)。

Effects of P Fertilizer on Growth of Low-yield and Young Pinus massoniana

Zhao Minchong1, Zhao Hua2, Liu Jianzhong1, Song Chuansheng1   

  1. (1Guizhou Forestry Survey and Planning Institute, Guiyang 550003;2The Forestry Department of Guizhou Province, Guiyang 550003)
  • Received:2015-09-10 Revised:2015-09-29 Accepted:2015-10-16 Online:2016-02-01 Published:2016-02-01

摘要: 笔者通过对5年生的马尾松低产林幼林进行施氮肥试验,试图研究马尾松低产林幼林生长量与磷肥施肥量之间的回归关系。结果表明:马尾松低产林幼林生长量与磷肥施肥量之间的关系符合一元二次抛物线方程,反应曲线为典型凸形曲线,即生长量各指标均存在1个峰值。峰值以前,生长量各指标随着磷肥施肥量的增加而上升;峰值以后,生长量各指标随着磷肥施肥量的增加而下降。根据回归模型方程式求解,得到树高、胸径生长量最大时对应的磷肥施肥量均为0.11 kg,对应的最高理论树高、胸径分别为2.6 m、4.87 cm,分别较对照提高了36.84%、10.93%。

关键词: 山东, 山东, 农作物, 籽实, 器官, 热值

Abstract: To reveal the regression relationship between the sapling increment and the rate of P fertilizer application, an experiment of P fertilizer application was conducted in a 5-years low-yield young Pinus massoniana forest. The results showed that there was a parabolic trend equation which could efficiently represent the relationship between the increment and the application amount, the reaction curve was a typical convex curve and reflected one peak in each index of increment. Each index of increment rose with the increase of P fertilizer application amount before the peak, and turned to decrease with the increase of P fertilizer application after the peak. According to the results, 0.11 kg P fertilizer per tree should be applied to trees when the average height and DBH was the maximum respectively, the maximum corresponding height and DBH in theory were 2.6 m and 4.87 cm, and respectively increased by 36.84% and 10.93% in comparison with that of CK.

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