T/ZHDZ 008-2022 Active Group standards

T/ZHDZ 008-2022 Techniques for cultivating and selecting Zhanhua winter jujube seedlings

Publish Date: 2022-06-16 Implement Date: 2022-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Price: $ 20.00

Out of stock

Basic Information

Standard Code: T/ZHDZ 008-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Terminology (principles and coordination and cooperation)

Publish Date: 2022-06-16

Implement Date: 2022-07-01

Scope

Main technical content: Zhanhua winter dates mainly use grafting as the reproduction method. There are 3,000-5,000 seedlings per acre. The winter date seedlings cultivated by grafting have the characteristics of fast seedling growth, large growth volume, and maintaining the excellent characteristics of the variety. 3.1 Rootstock cultivation The commonly used rootstocks for winter dates include native rootstocks and sour dates. Native rootstocks refer to the root and sucker seedlings of ordinary dates. Sour dates can use wild seedlings or cultivate seedlings in the nursery. 3.1.1 Sour date seedling cultivation 3.1.1.1 Seed collection and processing. Collect fully mature sour date fruits of the same year, remove the shells, and store them in a cool place. 3.1.1.2 Nursery preparation. Select sandy loam or loamy soil with good soil fertility and irrigation conditions, level the soil, and apply more than 5,000 kg of well-rotted compost per acre. Till the soil to a depth of 20 cm and prepare beds for use. 3.1.1.3 Grafted seedling cultivation. Sow the seeds in a double-row dense planting pattern, with a distance of 80-100 cm between rows and a distance of 30 cm within rows, and a planting spacing of 15-20 cm per seedling. Use 1-1.5 kg of seeds per acre, cover the soil with a thickness of no more than 2 cm, and then cover with a film. After the grafted seedlings emerge, make holes in the film for training for 24 hours, then release the seedlings and compact the film with a small amount of soil. When the seedlings reach about 6 true leaves, thin the seedlings to leave 3,000-5,000 seedlings per acre. During the seedling growth period, weeding should be carried out in time. When the grafted seedlings reach 40 cm in height, pinch the tips to control their height and promote thickening. 3.1.2 Secondary seedling cultivation Secondary seedling cultivation, also known as nursery cultivation, refers to the centralized cultivation of root and sucker seedlings of other