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Effects of Root Fertilizing With Nitrogen,Phosphorus,and Potassium on the Fine Root Length Density of Juglans regia ‘Xinwen185’ Under Specific Soil Nutrient Conditions

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年06
Page:
54-59
Research Field:
Publishing date:

Info

Title:
Effects of Root Fertilizing With Nitrogen,Phosphorus,and Potassium on the Fine Root Length Density of Juglans regia ‘Xinwen185’ Under Specific Soil Nutrient Conditions
Author(s):
WANG Shiwei; PAN Cunde; HU Zhenzhu; ZHAO Shanchao; LI Xing; GUO Jiahuan
(College of Forestry and Horticulture,Xinjiang Agricultural University/Key Laboratory of Forestry Ecology and Industry Technology in Arid Region,Education Department of Xinjiang,Urumqi,Xinjiang 830052)
Keywords:
Juglans regia ‘Xinwen185’; walnut; soil nutrient; fine root length density; effect
PACS:
-
DOI:
10.11937/bfyy.20182341
Abstract:
uglans regia ‘Xinwen185’ trees were used as test material.Based on the field experiment of ‘3414’ fertilizer effect,the root drilling sampling and the image scanning analysis method were used to study the effects of root fertilizing with nitrogen (N),phosphorus (P) and potassium (K) on the fine root length density of under specific soil nutrient conditions,in order to provide a scientific basis for the management of soil nutrients of Juglans regia ‘Xinwen185’.The results showed that the square root (Sqrt C) of the fine root length density of walnut (C) had a highly significantly linear relationship with the mutual function of P and K fertilizers (P×K),the application amount of N fertilizer (pure nitrogen,N),and its square.The linear equation was Sqrt 〖AKC^〗=0.221-0.084P×K+ 0.067N-0.025N2.Under specific soil conditions (alkali solution N 77.7 mg?kg-1,effective P 14.3 mg?kg-1,available K 77.3 mg?kg-1),P and K fertilizer had no significant effect on the fine root length density of Juglans regia ‘Xinwen185’,but their interaction (P×K) had negative effects on fine root length density.When the amount of N fertilizer (pure nitrogen) was less than 1.34 kg per plant,there was a positive effect on the fine root length density of Juglans regia ‘Xinwen185’;otherwise there was a negative effect.

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Last Update: 2019-04-17