Water dropwort top dressing formula and top dressing method

A technology of cress and formula, applied in the direction of fertilization method, fertilization device, fertilizer mixture, etc., can solve the problems of P fertilizer waste, environmental pollution, etc., and achieve the effects of saving dosage, reducing environmental release, slowing down the formation and outbreak

Inactive Publication Date: 2012-10-17
YANGZHOU UNIV
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Problems solved by technology

Reasonable fertilization is not carried out according to the demand for fertilizer for th

Method used

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  • Water dropwort top dressing formula and top dressing method
  • Water dropwort top dressing formula and top dressing method
  • Water dropwort top dressing formula and top dressing method

Examples

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Embodiment Construction

[0022] The nutrient solution of different ratios of N, P and K was used to cultivate cress, and the quality indicators such as yield and crude fiber of the product (petiole) were measured and compared, and the N-P-K fertilization ratio that could ensure both yield and quality was sought.

[0023] Verification of the best N:P growth of cress in hydroponics 2 O 5 : K 2 O=1.78∶1∶3.98; but it was also found that reducing the K content in the nutrient solution to half the amount had no significant effect on the yield of cress, indicating that the amount of K fertilizer application can be appropriately reduced.

[0024] Table 1 Effects of different N and K nutrition levels on chlorophyll, photosynthetic rate and yield of cress

[0025]

[0026] Note: Different small letters in each column indicate that the difference reaches a significant level of 0.05, the same below.

[0027] Treatment settings: All treatments in Table 1 were prepared according to the formula of Park.Y.J, Ki...

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Abstract

The invention belongs to the field of agriculture (vegetables) cultivation, and specifically relates to a water dropwort top dressing formula and a top dressing method. The water dropwort top dressing formula comprises urea and potassium sulfate, wherein a mass ratio of the urea to the potassium sulfate is 1:1.1. During top dressing, urea and potassium sulfate are dressed within 3 days after eachstubble of the water dropwort is harvested, wherein the dressing amounts of the urea and the potassium sulfate are respectively 140 kg/hm<2> and 168 kg/hm<2>. With the top dressing of the formula of the present invention, the use amount of P fertilizer can be saved, and the production cost can be saved; the environment release of the P element can be reduced, and formation and outbreak of blue-green algae in a large water body can be slowed down; and most of P ores in our country contain lead, cadmium and other toxic heavy metal elements, such that active effects can be provided for preventing toxic heavy metals in water dropwort products from exceeding the standard by reducing the P fertilizer application.

Description

technical field [0001] The invention belongs to the field of agricultural (vegetable) cultivation, and in particular relates to a formula top dressing method for cress. Background technique [0002] Leafy vegetables are generally dominated by N fertilizer to promote vegetative growth and rapid growth. [0003] Base fertilizers are generally compound fertilizers or decomposed organic fertilizers with similar ratios or contents of N, P, and K. [0004] P element is the limiting factor for the proliferation of blue-green algae in eutrophic freshwater, and the release of P element will lead to the outbreak of blue-green algae in eutrophic water; associated heavy metals (Zn, Pb, Cu, Co, Ni, Cd), long-term and large-scale application may lead to the accumulation of corresponding heavy metals in the soil and endanger the safety of agricultural products. [0005] Crude fiber content is the main index affecting the taste quality of leafy vegetables. [0006] Leaf cress (wet plante...

Claims

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Application Information

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IPC IPC(8): C05G1/00A01C21/00
Inventor 江解增缪旻珉徐媛李艳莉陈晓红
Owner YANGZHOU UNIV
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