CN1339527A

CN1339527A - Pretective film for fruit and vegetable

Info

Publication number: CN1339527A
Application number: CN 00113964
Authority: CN
Inventors: 傅武俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-06
Filing date: 2000-11-06
Publication date: 2002-03-13

Abstract

The fruit and vegetable protecting film is a kind of transparent film formed by non-toxic and aromatic emulsion containing chitosan, carboxylmethyl cellulose, acrylic acid, distilled water and other nutritive components. When the emulsion is sprayed onto branch, leaf and fruit of fruit tree and vegetable, a layer of continuous transparent and penetrative film is formed to avoid contact with pesticide. The present invention can be used in producing pollution-free fruit and vegetable and increasing yield.

Description

Pretective film for fruit and vegetable

Content of the present invention belongs to fruits and vegetables planting technology field, relate to a kind of be used to spray the fruit tree blade face and the fruit face with the protection fruit tree avoid the Pretective film for fruit and vegetable that disease and pest infects and improve the fruit growth quality.

At present along with the adjustment of the structure of rural undertaking, just with at double speed increment, fruit yield is also in continuous increase for China's rural area fruits and vegetables cultivated area.In the fruits and vegetables cultivation, infect problem in order to solve disease and pest, a lot of orchard workers have taked to increase the weight of pesticide spraying dosage and have increased the way of spraying number of times fruit tree, though this way obtains certain effect, have brought chemicals residual quantity on the fruit to exceed standard and the problem of serious environment pollution.As solving the excessive use of agricultural chemicals to the work the mischief measure of problem of fruit, in recent years, fruit cover band technology has obtained big area and has promoted.Fruit cover band wraps the fruit cover with paper bag or plastics bag at the fruit young fruit period with exactlying, sack is pulled down to the fructescence again, intercepts really face of agricultural chemicals contact with mechanical means.Though this technology can reach the purpose of producing nuisanceless fruit, but through facts have proved that it still has many defectives, 1., fruit bag investment is bigger it shows:, at present with regard to the Shaanxi community survey, selling every price of bagging is between 0.02～0.20 yuan, and it is 130～600 yuan that the bagging expense is used in every mu of orchard; 2., time-consuming, implement the cover bag technique, every orchard worker will employ a large amount of labor forces, cover is bag and tear once bag open once, its employment expense also often surpasses the sack cost; 3., bagging only can entangle fruit, the fruit tree branches and leaves also need be sprayed insecticide, so bagging can not reduce the usage quantity of agricultural chemicals; Though 4., overlapped the bag fruit chemicals residual quantity low, fruit surface is smooth, its sugar degree is low, mouthfeel is poor, fruit is fragile, not anti-storage.

The object of the present invention is to provide a kind of Pretective film for fruit and vegetable, in order to overcoming the existing above-mentioned defective in present this area, and then promote the raising of fruit growth quality effectively, simultaneously to the also in addition control effectively of various fruit and vegetable physiological regulation diseases.

Pretective film for fruit and vegetable goods of the present invention are a kind of nontoxic fragrant clear emulsion film that contains the multielement nutrition composition; its chemical composition comprises chitosan (D glucosamine), carboxymethyl cellulose, propionic acid and distilled water, and above material at material shared content (weight percent) in the Pretective film for fruit and vegetable goods is:

Chitosan 10～15% carboxymethyl celluloses 15～20%

In propionic acid 8～12% distilled water 53～67% above materials, chitosan be white to pale yellow powder or flakey solid, Nantural non-toxic, dissolve in acetate, lactic acid, oxysuccinic acid etc., in goods as membrane-forming agent; Carboxymethyl cellulose is the white powder material, and water absorbability is very strong, can be water-soluble and generate transparent Colloidal fluid, 10～40 milli handkerchief seconds of viscosity (25 ℃), in goods as membrane-forming agent and plasticising binding agent; Propionic acid is the white liquid material, and can be with water miscible and be dissolved in organic solvent, it be the solvent and the auxiliary agent of Pretective film for fruit and vegetable, and its effect is a sterilization and anticorrosion; Distilled water then uses as the solvent of goods.

The application process of Pretective film for fruit and vegetable goods of the present invention is the same as " foliage fertilizer "; can be sprayed at simply on the branches and leaves and fruit of crop; but it can form the ventilative continuous rete of a printing opacity that is invisible to the naked eye very soon on fruit top layer, blade face and limb after being sprayed on branches and leaves and the fruit; protecting fruits is got up; play the diseases prevention that is similar to fruit bagging, disease-resistant and anthelmintic action, and then reach the purpose that makes the fruits and vegetables increasing both production and income and improve grade.

Pretective film for fruit and vegetable goods of the present invention in recent years successively surplus in the of 200 of the ground such as Xi'an, Xianyang, Liquan County and Qian County under Shaanxi Province mu apple, pears, peach orchard carried out application test; evenly be sprayed on blade face, blade back and the fruit face of fruits and vegetables after during use goods liquid being converted 250 times in water; general interval reused in 30 days; preceding 10 days of picking fruit also can spray once.

The advantage that compared with prior art the present invention had is:

1, the protective film that forms after this product sprays can effectively intercept outside disease and pest infecting fruits and vegetables, the germ substance adhesion of having infected before spraying on fruit, the blade face can be suppressed again, make it can't multiply expansion, avoided contacting of fruit and agricultural chemicals, guaranteed the fruit normal growth that no chemicals are residual, simultaneously also significantly reduce the usage quantity of agricultural chemicals, thereby reached the purpose of producing nuisanceless fruits and vegetables;

What the protective membrane that forms after 2, this product sprays was different with fruit bagging is its energy printing opacity, ventilative, flexible, neither influencing fruit growth expands, do not influence fruit illumination again and increase sugar painted, so fruit outward appearance light, immaculate, keep the original taste of fruit simultaneously, also solved behind the bagging fragile, the deficiency of anti-storage not of fruit;

3, this product not only can improve blade face photosynthesis at the rete of blade face formation, increases plant nutrient, can also suppress the evaporation and the transpiration of moisture effectively, strengthens the drought resistance of plant, thereby has played the effect of regulating the plant physiology function;

4, save time, laborsaving, cut down expenses, this product is about 2 kilograms to the consumption in every mu of orchard, spending only 60～120 yuan greatly reduces than artificial bagging cost, has reduced the production cost of fruit effectively;

5, use range is wide, outside this product decapacitation is used on fruit trees such as apple, pears, peach, grape, oranges and tangerines, jujube, also can use on food crop such as cash crop such as melon dish, cotton, flue-cured tobacco, rape, crudefiber crop and wheat, corn, paddy rice.

Claims

A kind of be used to spray the fruit tree blade face and the fruit face with the protection fruit tree avoid the Pretective film for fruit and vegetable that disease and pest infects and improve the fruit growth quality; be a kind of nontoxic fragrant clear emulsion film that contains the multielement nutrition composition, it is characterized in that it is made up of the material of following weight percent:

Chitosan 10～15% carboxymethyl celluloses 15～20%

Propionic acid 8～12% distilled water 53～67%