Preliminary study on the effects of drugs for Jujube fruit cracking
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DOI:10.7606/j.issn.1000-7601.2010.06.26
Key Words: jujube  fruit cracking  type of drug  control effect  Yulin
Author NameAffiliation
WANG Xing College of Resources and Environment, Northwest A & F UniversityYangling, Shaanxi 712100, China 
ZHU Delan College of Resources and Environment, Northwest A & F UniversityYangling, Shaanxi 712100, China 
QUAN Jine College of Forestry, Norhuest A & F UniverstyYangling, Shaanxi 712100, China 
YANG Ronghui College of Resources and Environment, Northwest A & F UniversityYangling, Shaanxi 712100, China 
LI Xiaobin Institute of Soil and Water ConservationChinese Academy of Sciences and Ministry of Water ResourcesYangling, Shaanxi 712100, China 
NAN Juan College of Water Resources and Architectural EngineringNorthwvest A & F University, Yangling, Shaanxi 712100China 
MA Jing College of Water Resources and Architectural EngineringNorthwvest A & F University, Yangling, Shaanxi 712100China 
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Abstract:
      In order to explore ways of crack resistance of jujube fruit, through field survey and under natural condi- tions, jujube fruit cracking rate is studied with ten jujube varieties of Junzao, Zanhuangdazao,Lizao, Jiaxianchangzao, Mayadazao , Chahuzao, Xiaomuzao , Coutoudazao ,Jinzao and Guanyangchangzao (“China Fruit Notes”date based on the volurme name) . After three varieties of jujube are sprayed with six kinds of insecticides, such as Meigaimei , Ruien Calci-um, Guoshubang, Water solute fertilizer of middle element,, Yikele vitality bacteria, Jnmantian, natural rainfall and artificial rainfall as well as leaching test are used to investigate the cracking rate. The results are as fllows: Under natu-ral conditions, fruit cracking of different species is generally associated with rainfal time and the maturity of the jujube. The main reason for jujube cracking is because rainfall happens during the maturity, but some varieties, such as Guanyangchangzao and so on, have strong crack resistance property and are seldom affected by rainfall. The results also show that the phamaceutical have effect on anti-cracking of jujube, but it is limited. The Meigaimei and Yikele vitality bacternia are relatively better for anti-cracking according to the experiments, and they are also worth extending in produc-tion. Taken together, to solve the problem of date fruit cracking, the key point is to select proper varieties of jujube, while the drugs and management should also be the main ways in the future.