Nutrient solution for soilless culture leaf vegetable and method for producing the same

A technology of soilless cultivation and leafy vegetables, applied in the direction of inorganic fertilizers, application, nitrogen fertilizer, etc., can solve the impact of formula on the nutritional quality of leafy vegetables, the impact on the quality of leafy vegetables without consideration, and the lack of consideration The impact of cucumber safety and quality and other issues, to achieve the effect of easy industrialization, flexible formula, easy to operate

Inactive Publication Date: 2008-07-16
INST OF SOIL & FERTILIZER SHANDONG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent document CN1587228A (200410071126.4) provides a kind of environment-friendly cucumber nutrient solution, through the nutrient solution that can change the form of nitrogen with the change of ambient temperature conditions, the absorption and utilization rate of nitrogen can be improved, but because it is specially suitable for cucumber, in addition only The impact on the environment is taken into account, but the impact on the safety and quality of cucumbers is not considered
Chinese patent document CN1547890A (03116937.6) discloses a formula and preparation method of a miniature hydroponic leaf vegetable nutrient solution. It is not conducive to the needs of large-scale industrial production; in addition, while the invention meets the nutritional elements required for the production of leafy vegetables, it does not consider the impact of the formula on the nutritional quality of leafy vegetables
However, the two patents did not consider whether the use of the nutrient solution formula would affect the quality of leafy vegetables

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1. is applicable to the formula of nutrient solution of spinach soilless cultivation

[0039] (1) Prepare 1 L of mother liquors of calcium nitrate, potassium nitrate, ammonium sulfate, calcium chloride, potassium dihydrogen phosphate, and 0.5 mol / L magnesium sulfate and potassium sulfate respectively.

[0040] (2) Weigh boric acid H 3 BO 3 2.86g, manganese dichloride (MnCl 2 4H 2 O) 1.81g, copper sulfate (CuSO 4 ·5H 2 O) 0.08g, zinc sulfate (ZnSO 4 ·7H 2 O) 0.22g, molybdic acid (H 2 MoO 4 4H 2 O) 0.09g dissolved in 1L of water, as microelement concentrate.

[0041] (3) 5.57g FeSO 4 ·7H 2 O was dissolved in 200ml of water, then slowly added to 400ml of slightly boiling aqueous solution in which 7.45g of ethylenediaminetetraacetic acid disodium was dissolved, and kept stirring, and finally set the volume to 1L, which was the mother liquor of EDTA-Fe.

[0042] (4) Prepare 100L spinach nutrient solution (the molar ratio of ammonium nitrate is 1:1), p...

Embodiment 2

[0043] Embodiment 2. is applicable to the formula of nutrient solution of vegetable soilless cultivation

[0044] Step (1)~step (3) the mother liquor preparation method of each element is the same as embodiment 1. The difference is:

[0045] (4) Prepare 100L vegetable nutrient solution (the molar ratio of ammonium nitrate is 3:1), press NO 3 - : NH 4 + :H 2 PO 4 - : K + : Ca 2+ :Mg 2+ : Fe 2+ : Cu 2+ : Zn 2+ :Mn 2+ :B 3+ :Mo 6+ = 9: 3: 3: 7: 5: 4: 0.02: 0.0003: 0.001: 0.009: 0.05: 0.0004, respectively add 450 ml of calcium nitrate prepared in step (1), 150 ml of ammonium sulfate, and 300 ml of potassium dihydrogen phosphate to 98 L of water , potassium sulfate 400ml, magnesium sulfate 400ml, calcium chloride 50ml, add 100ml of the trace element concentrate prepared in step (2), add 100ml of EDTA-Fe prepared in step (3), stir well, and adjust the pH value to between 6.0 and 7.0 You can use it directly.

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Abstract

The invention relates to a nutrient solution for soilless cultivating leafy vegetables and a preparation method thereof. Molar ratio of nutrient elements in the nutrient solution is: NO3<->: NH4<+>: H2PO4<->: K<+>: Ca<2+>: Mg<2+>: Fe<2+>: Cu<2+>: Zn<2+>: Mn<2+>: B<3+>: Mo<6+>, which is equal to (4 to 6): (3 to 6): (2 to 4): (5 to 8): (4 to 6): (2 to 3): 0.02: 0.0003: 0.001: 0.009: 0.05: 0.0004; the nitrogen is supplied in two forms: NO<3> and NH<4> with a proportion kept between (1 to 3): 1. The nutrient solution has flexible formulation, easy preparation and full nutrition, which can significantly improve nutrient quality of the leafy vegetables and reduce negative influence to environment and human health. The invention can meet the needs of soilless cultivation of the leafy vegetables of different kinds, which is convenient for industrial popularization.

Description

technical field [0001] The invention relates to a plant nutrient solution formula for soilless cultivation, in particular to a nutrient solution for producing high-quality leafy vegetables and a preparation method thereof, belonging to the technical field of soilless cultivation. Background technique [0002] my country is a big vegetable consumption country. The per capita possession of vegetables in households nationwide has risen from 178.7 kg in 1991 to more than 300 kg in 2000, far exceeding the world average of 102 kg / person·year. With the development of my country's economy and the improvement of people's living standards, people have higher requirements for vegetable consumption. In addition to paying attention to the sensory taste of vegetables, they also pay more and more attention to the nutrition, hygiene and safety quality of vegetables. [0003] In edible vegetables, the content of nitrate is regarded as an important index to measure the quality of vegetables. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05C5/04C05C5/02C05C3/00C05D3/00C05D5/00C05D1/02C05B17/00
Inventor 张英鹏李彦孙明董晓霞王学君李国生高弼模
Owner INST OF SOIL & FERTILIZER SHANDONG ACAD OF AGRI SCI
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