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Method for increasing differentiation rate and improving uprightness of buds of ipomoea batatas used as leaf vegetable in winter greenhouse

A bud differentiation and sweet potato technology, applied in the field of sweet potato planting, can solve the problems of large amount of fertilization, easy creeping and leggy main vines, few branches, etc., and achieve the effects of increased yield, easy picking, and compact plant type

Inactive Publication Date: 2014-11-19
JIANGSU XUHUAI DISTRICT XUZHOU AGRI SCI INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Generally, sweet potatoes for leafy vegetables in the field are planted with high density and large amount of fertilization. The main vines tend to prostrate and grow with few branches, which will cause the lower leaves to be covered, prematurely aging, or even die, which seriously affects the yield and quality of stems and leaves.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Xu Caishu No. 1, also known as Shu (Cui) Green No. 1, is a new variety of sweet potato for stem and leafy vegetables jointly bred by Jiangsu Xuzhou Institute of Agricultural Sciences and Zhejiang Academy of Agricultural Sciences. The growth potential is strong, the stem tip is prominent, the apex has teeth, no hair, and the leaves are small. The top leaves and leaves are light green, the veins, petioles, vein bases, handle bases, and stems are all green, and the plant type is semi-erect. The petiole is 10.8cm long, the petiole is 3.7mm thick, the branching ability is strong (11.1), the stem is 5.8mm thick, and the internode is 4.4cm long. Stem tip vegetables are fragrant and lubricated, without bitterness and astringency, and taste better than fungus vegetables and water spinach.

[0016] In view of the characteristics of Xu Caishu 1, such as strong growth potential, strong branching ability, short and thick internodes, and semi-erect plant type, the specific methods t...

Embodiment 2

[0024] Ningcaishu No. 2, the original line number Ningcai 4~2, was further screened, identified and cross-breeded by the Jiangsu Nanjing Institute of Agricultural Sciences for the main leaf vegetable varieties. It is a sweet potato variety for stem tip leafy vegetables with a refreshing taste. It passed the national variety identification in March 2012. It is characterized by vigorous growth of the aboveground part, many base branches, 10-12 branches per plant, and high yield; short vines are semi-erect, with long petioles, large leaves, heart-shaped leaves with teeth, and emerald green color after ripening; cold resistance Strong, suitable for growth in Jiangsu and northern regions, and can grow normally in sunlight greenhouses in winter. It is a new type of vegetable substitute for leafy vegetables suitable for green production.

[0025] According to the characteristics of long petiole, strong growth potential, and semi-erect plant type of Ningcaishu No. 2, the specific meth...

Embodiment 3

[0033] Fushu 7-6 was bred by the Crops Institute of Fujian Academy of Agricultural Sciences in 2003 through the "Baisheng" plan group, and passed the national variety identification in 2005. It is the first leaf vegetable in my country to pass the provincial and national identification Use new varieties of sweet potatoes. The plant type is short and semi-erect, with 8 to 10 branches per plant, heart-shaped leaves, and 74.4kg / time of leafy vegetable shoot tips per mu. Fresh and tender stems and leaves (fresh base) Vc content 14.87mg / 100g, crude protein (dry base) 30.8%, crude fat (dry base) 5.6%, crude fiber (dry base) 14.2%, water-soluble total sugar (fresh base) basis) 0.06%. The plant type, leaf shape, color, growth and taste of Fushu 7-6 are very similar to fungus, and the color, aroma and taste of the stem tips are good after ripening.

[0034] In view of the relatively few side buds and relatively weak growth vigor of Fushu 7-6, the specific methods to improve the differ...

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Abstract

The invention discloses a method for increasing differentiation rate and improving uprightness of buds of ipomoea batatas used as a leaf vegetable in a winter greenhouse. The method includes the specific steps: (1) adding 2000-2500kg / mu of organic fertilizer, 20kg / mu of calcium superphosphate and 20-30kg / mu of potassium nitrate into soil; (2) shearing robust ipomoea batatas seedlings 20-25cm in length, reserving 3-4 top leaves, removing spare leaves, and soaking the bottoms of the batatas seedlings in 150-200ppm rooting powder solution for 30 minutes before transplanting; (3) transplanting the ipomoea batatas seedlings according to planting density of 9000-10000 / mu; (4) after 30 days of transplanting, spraying 30kg / mu of 100-150ppm uniconazole solution to the ground for the first time at five-six pm on the same day, and after that, spraying the equivalent amount of the 100-150ppm uniconazole solution once within 10-15 days before picking every time; (5) performing picking when top stem leaves grow to 10-15cm. By the method, the differentiation rate of the lateral buds of ipomoea batatas used as the leaf vegetable can be increased, and the plants are enabled to be compact, upright or semi-upright.

Description

technical field [0001] The invention relates to a method for improving the differentiation rate and uprightness of sweet potato buds used for leafy vegetables in greenhouses in winter, and belongs to the technical field of sweet potato planting. Background technique [0002] Sweet potato (Ipomeoa batatas (L.) Lam.) is a crop of Convolvulaceae Ipomoea genus, which is an important food, feed, industrial raw material and bioenergy crop in the world. For a long time, people mainly focused on the value of underground tubers of sweet potato, while ignoring the role of aboveground stems and leaves. As early as the 1970s, Villareal, the Asian Vegetable Research Center, proposed that sweet potato shoot tips could be eaten as vegetables, and spoke highly of its nutritional value. Sweet potato stem tip leafy vegetables refer to the tender part of the stem and leaf 10-15cm below the growth point of the stem tip. The nutritional value of sweet potato stems and leaves is much higher tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00
Inventor 唐忠厚陈晓光史新敏魏猛张爱君李洪民
Owner JIANGSU XUHUAI DISTRICT XUZHOU AGRI SCI INST