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Effect of Foliar Nitrogen Fertilizer on Yield of Spinach and Content of Nitrate(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年01
Page:
51-53
Research Field:
Publishing date:

Info

Title:
Effect of Foliar Nitrogen Fertilizer on Yield of Spinach and Content of Nitrate
Author(s):
LI Ke; HAN Ping
(College of Agriculture and Forestry Science and Technology,Longdong University,Qingyang,Gansu 754000)
Keywords:
Keywords:spinach; spraying; nitrogenous fertilizer; yield; nitrate content
PACS:
-
DOI:
10.11937/bfyy.201501014
Abstract:
Abstract:Taking spring spinach as experimental material,the effect of foliar nitrogen fertilizer on yield of spinach and content of nitrate were studied.The results showed that yield of spinach was between 27 714.3 kg/hm 2 and 53 714.3 kg/hm 2 among the different treatments,spraying nitrogenous fertilizer on foliar could all increase the yield of spinach significantly；the average content of nitrate of spinach was between 118.83 mg/kg and 450.63 mg/kg,and with the more the nitrogen application,the more the content of nitrate,and at the later term of the growth of spinach,spraying nitrogenous fertilizer causes the accumulation of nitrate spinach.Treatment 6(spraying nitrogenous fertilize at the 6-7 leaves and 9-10 leaves only once respectively) was nearly to the classification and rating criteria of domestic nitrate,and the content of nitrate in treatment 7(spraying nitrogenous fertilize at the three stages respectively) had exceed the standard,the left treatments are all normal.Comprehensively,treatment 4(spraying nitrogenous fertilize at the 3-4 leaves and 6-7 leaves only once) was the best fertilizer way by the yield and nitrate content of spinach,and it could be applied in production.

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Last Update: 2015-02-10