CN101027969A

CN101027969A - NPK nutrition evaluation of flower

Info

Publication number: CN101027969A
Application number: CN 200710064047
Authority: CN
Inventors: 杨秀珍; 刘燕; 张启翔; 牛立军; 李振华
Original assignee: Beijing Forestry University
Current assignee: Beijing Forestry University
Priority date: 2007-02-16
Filing date: 2007-02-16
Publication date: 2007-09-05
Anticipated expiration: 2027-02-16
Also published as: CN100496216C

Abstract

A method for fast determining the contents of N, P and K nutrients in the New-Guinean balsam planted in flowerpot features that an NPK nutrients map for New-Guinean balsam is disclosed for determining its nutritive state quickly.

Description

The NPK nutrient diagnosis method of potted flower new guinea impatiens

Technical field

The present invention relates to floriculture and diagnosis of plant nutrition field, particularly, relate to the method for utilizing the leaf look to diagnose the nutrition of new guinea impatiens potted flower.

Background technology

Flower industry is one of industry most active in world today's agricultural.Through 20 years of development, China has become the country of flower planting area maximum in the world, and potted flower output reached 1,100,000,000 basins in 2005.

New guinea impatiens (Impatiens platypatala) is a Balsaminaceae impatiens herbaceous plant, originates in the Asia and the torrid zone, Africa.Its breeding center is in the U.S., and the part kind is imported Asia and China in recent years into.Pattern is very abundant, adularescent, peachiness, redness, purple, orange and secondary color.But blooming in the kind anniversary mostly, is one of important potted flower of China in recent years.

In the cultivation process, the trophic disturbance phenomenon can appear in new guinea impatiens, and this not only can reduce the potted flower quality, also can cause economic loss.

Therefore, the diagnosis of plant nutrition technology has become the necessary technology means that instruct fertilising, diagnostic method commonly used at present has plant tissue analyzing and diagnosing method, soil analysis diagnosis, plant outward appearance diagnosis, field fertilization test diagnosis method, physiological and biochemical analysis diagnosis, plant tissue liquid analyzing and diagnosing method, non-destructive testing technology and other diagnostic methods etc., and does not see any report so far about the research of new guinea impatiens nutrient diagnosis method.

Summary of the invention

Study through the cultivation to new guinea impatiens for a long time, the inventor provides new guinea impatiens nutrient diagnosis method-leaf colour inspection method of breaking, set up the nutrient diagnosis collection of illustrative plates of these flowers NPK three big nutritive elements, for its nutrient diagnosis provides method quickly and easily.

The nutrient diagnosis of described NPK three big nutritive elements thes contents are as follows: the plant of nitrogen stress shows as: plant is short and small, and it is light green or yellowish green that the leaf look is, and leaf is little, and it is few to bloom, and is not obvious to the root growth influence.

The plant that lacks phosphorus shows as: root growth is affected, and root system is short, and branch is few.Acrial part middle and lower part blade shows as green, the central bolarious feature of leaf margin, does not bloom.

The plant of potassium deficiency shows as: the growth retardation phenomenon is not remarkable, and the jaundice of lower blade leaf margin is dried-up gradually, presents symptoms such as leaf is bent downwardly.

Those skilled in the art will be understood that diagnosis of plant nutrition is the mensuration by plant analysis, soil analysis and other physiological and biochemical indexs, and the approach such as mode of appearance observation of plant are objectively judged the plant nutrition situation.Examining is examination, promptly checks the malnourished situation of cultivated plant; Disconnected is the development of judging symptom, and the method for plant nutrition is regulated in prompting.The method of diagnosis of plant nutrition mainly is divided into morphological diagnosis and plant corpus chemical analysis two big classes.

What new guinea impatiens nutrient diagnosis of the present invention adopted is the disconnected method of leaf colour inspection, at first sets up the leaf chromatic graph spectrum of the nutrient diagnosis of NPK three big nutritive elements.When N nutritional deficiency, phenomenons such as plant is short and small, and it is light green or yellowish green that the leaf look is, and leaf is little take place in new guinea impatiens, can be judged as N nutritional deficiency (as shown in Figure 1).

When new guinea impatiens P nutritional deficiency, new guinea impatiens plant middle and lower part blade shows as green, the central bolarious feature of leaf margin, and the result can be judged as P nutritional deficiency (as shown in Figure 2) in view of the above.

When new guinea impatiens PK nutritional deficiency, the new guinea impatiens plant strain growth phenomenon of being obstructed is not remarkable, and only lower blade leaf margin jaundice is dried-up gradually, presents symptoms such as leaf is bent downwardly, and decidable is K nutritional deficiency (as shown in Figure 3) thus.

Description of drawings

Fig. 1 is the comparison diagram of the leaf of nitrogen stress plant and normal new guinea impatiens;

Fig. 2 is the comparison diagram of scarce phosphorus plant with the leaf of normal new guinea impatiens;

Fig. 3 is the comparison diagram of the leaf of potassium deficiency plant and normal new guinea impatiens.

Below in conjunction with specific embodiment, further set forth the present invention.Those skilled in the art will be understood that these embodiment only are used to the present invention is described and are not used in and limit the scope of the invention.

Embodiment 1

The NPK leaf colour inspection of new guinea impatiens is disconnected

Get three strain new guinea impatienses, number consecutively is #1, #2, #3, and it is compared with the collection of illustrative plates that the present invention sets up, and leaf symptom that obtains and diagnosis see the following form 1.

Numbering	The leaf symptom of new guinea impatiens strain	Diagnosis
Numbering	The leaf symptom of new guinea impatiens strain	Diagnosis	#01	Phenomenons such as it is short and small that plant is taken place, and it is light green or yellowish green that the leaf look is, and leaf is little	N nutritional deficiency
#02	New guinea impatiens plant middle and lower part blade shows as green, the central bolarious feature of leaf margin	P nutritional deficiency	#01		N nutritional deficiency
#02		P nutritional deficiency	#03	The new guinea impatiens plant strain growth phenomenon of being obstructed is not remarkable, and only lower blade leaf margin jaundice is dried-up gradually, presents symptoms such as leaf is bent downwardly	K nutritional deficiency

Table 1

Embodiment 2

Blade to new guinea impatiens carries out the nutrition evaluation

Get the three strain new guinea impatienses that above-mentioned numbering is respectively #1, #2, #3, take blade respectively, clear water is cleaned, 80 ℃ of oven dry were pulverized after 48 hours in the baking oven, and NPK quantitative analysis (wherein N kjeldahl apparatus, P UV-120 ultraviolet specrophotometer, K PE-2280 atomic absorption spectrophotometer) is carried out in the laboratory.Measurement result sees the following form 2.

Numbering	N content (leaf dry matter %)	P content (leaf dry matter %)	K content (leaf dry matter %)
Numbering	N content (leaf dry matter %)	P content (leaf dry matter %)	K content (leaf dry matter %)	Normal leaf	3.12	0.51	2.01
#01	1.89	0.49	1.96	Normal leaf	3.12	0.51	2.01
#01	1.89	0.49	1.96	#02	2.91	0.21	1.91
#03	2.48	0.42	1.12	#02	2.91	0.21	1.91

Table 2

This shows that the result who diagnoses by the disconnected method of side's of the present invention leaf colour inspection conforms to fully with measurement result, has high diagnosis accuracy.

Claims

1, a kind of method of utilizing the disconnected new guinea impatiens potted flower nutrition of leaf colour inspection comprises step:

(1) sets up the nutrient diagnosis collection of illustrative plates of the NPK three big nutritive elements of potted flower;

(2) described nutrient diagnosis collection of illustrative plates is planted in new guinea impatiens potted flower blade to be measured and (1) and compare, obtain diagnosis.

2, method according to claim 1 is characterized in that, the nutrient diagnosis collection of illustrative plates of NPK three big nutritive elements is as follows:

The plant of nitrogen stress shows as: plant is short and small, and it is light green or yellowish green that the leaf look is, and leaf is little, and it is few to bloom, and is not obvious to the root growth influence;

The plant that lacks phosphorus shows as: root growth is affected, and root system is short, and branch is few.Acrial part middle and lower part blade shows as green, the central bolarious feature of leaf margin, does not bloom;

3, method according to claim 1 and 2 is characterized in that, when new guinea impatiens generation leaf look to be measured is phenomenon such as light green or yellowish green, that leaf is little, can be judged as N nutritional deficiency.

4, method according to claim 1 and 2 is characterized in that, when plant middle and lower part blade shows as green, the central bolarious feature of leaf margin, can be judged as P nutritional deficiency.

5, method according to claim 1 and 2 is characterized in that, when the plant strain growth phenomenon of being obstructed not remarkable, only lower blade leaf margin jaundice, dried-up gradually, present symptoms such as leaf is bent downwardly, decidable is a K nutritional deficiency.