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Research on Different Technical Measures of Improving Fruit-setting Rate of Young Jujube in Gravel-sand Mulched Field in Ningxia(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2012年22期
Page:
1-5
Research Field:
Publishing date:

Info

Title:
Research on Different Technical Measures of Improving Fruit-setting Rate of Young Jujube in Gravel-sand Mulched Field in Ningxia
Author(s):
WEI Tian-jun; LI Bai-yun
Ningxia Academy of Agricultural and Forestry Sciences，Yinchuan，Ningxia 750002
Keywords:
gravel-sand mulched field; ‘Tongxinyuanzao’ jujube; jujube shoot; pinching; ringing on trunk; Ningxia
PACS:
S 665.1
DOI:
-
Abstract:
At ‘Xiangshan’ mountain arid areas in the middle Ningxia，the effects of pinching off jujube shoots，pinching off both jujube shoots and the secondary shoots，gibberellins spraying，ringing on trunk on fruit-setting rate，fruit numbers，jujube shoot and secondary shoot thickness，and other indexes of jujube tree vegetable growth were investigated under the field condition，by using the three-year-old ‘Tongxinyuanzao’ jujube trees with plant and row placing being 3 m×8 m while intercropping watermelon which the yield of was 12 000～13 500 kg/hm2.The results indicated that the treatment of pinching off jujube shoots at the full flowering stage was the best to improve fruit-setting rate during all flowering stage.Pinching off jujube shoots combined with the secondary shoots remaining 2～4 sections，pinching off jujube shoots combined with spraying 20 mg/kg gibberellins all obviously promoted fruit-setting rate and fruit number of individual.Especially，there were very significant effects when treated with ringing on trunk，pinching off jujube shoots combined with ringing on trunk，pinching off both jujube shoots and the secondary shoots combined with ringing on trunk.Jujube shoots and the secondary shoots thickness were increased with application of pinching off jujube shoots combined with the secondary shoots remaining 2～4 sections in flowering stage.At the rate of diameter of tree trunk increased yearly，pinching off jujube shoots，pinching off both jujube shoots and the secondary shoots were all significantly higher than that which treated with ringing on trunk.

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Last Update: 2014-08-30