CN1327745A - Agricultural chemical for preventing and treating plant botrytis - Google Patents

Abstract

An agricultural chemical for preventing and treating plant botrytis is prepared from tobacco leaf, sowthistle decoction, realgar and boric acid. Its advantages are high antibacterial power, low cost, high effect and simple preparing process.

Description

A kind of agricultural chemicals of preventing and treating plant botrytis

(1) technical field:

The present invention relates to a kind of agricultural chemicals of preventing and treating plant botrytis, gray mold is had special efficacy, anthracnose, two mildew, powdery mildew, early blight, scab are also had good control efficiency, belong to agricultural chemicals.

(2) background technology:

Gray mold is referred to as cancer of plants by the peasant, cause by fungi, it makes the blade flavescence of plant, and fruit goes rotten, most at present Cercobinms that adopt German import, this agricultural chemicals is the cost height not only, consumption is big, and bactericidal effect is bad, generally just recurrence again after spraying ten days, spray the excessive blade face that makes and lose function, therefore still do not have effective agricultural chemicals at present.

(3) summary of the invention:

Purpose of the present invention is the shortcoming and deficiency in order to overcome above-mentioned prior art just, and provides a kind of cost to hang down the good a kind of agricultural chemicals of preventing and treating plant botrytis of sterilization effect, thereby can effectively prevent the generation of gray mold and the harm of radical cure gray mold.

Technical scheme of the present invention is:

The agricultural chemicals of control plant botrytis is characterized in that it is the liquid pesticidal made from following materials of weight proportions and method:

20-30 parts on tobacco leaf, 2-5 parts of bitter dishes, 0.5-1.0 parts of male sulphurs, 3-5 parts of boric acid.

The tobacco leaf of said ratio, bitter dish are added 8-10 times of water, be heated to 90-95 ℃, decocted 10-20 minutes, filter and remove residue is collected decoction liquor, adds male sulphur of said ratio and boric acid again in decoction liquor, after abundant stirring and dissolving, be liquid pesticidal of the present invention.

Raw material of the present invention, wherein tobacco leaf and bitter dish are the herbal medicine with strong sterilization and bacteriostasis, its raw material sources are extensive, low price, male sulphur has bactericidal action, boric acid also has the dual-use function of sterilization and fertilizer, and the immunity that simultaneously can regulate plant makes agricultural chemicals of the present invention have good effect preventing and treating gray mold.

Through the agricultural experiment in 2-3 years, its result was as follows:

A) to the control efficiency of tomato gray mold:

Agricultural chemicals dilute with water of the present invention is sprayed on the tomato for 100 times, and after 3 days, blade face blackout thickening sprayed once again after 7 days, and sick leaf turns green, and scab does not enlarge, and sick fruit is not rotted, and has grown up, and the state of an illness is development not, and gray mold does not take place later on more yet.

B) to the control efficiency of the two mildews of grape:

What select the two mildews of trouble for use is downy mildew and 50 strains of white rot grape, 100 times of state of an illness of soup dilution

Show as the yellowing of disease leaf, sick fruit is rotted, and has used soup of the present invention, has sprayed three times, spray has grown light brown spot and has not enlarged for the first time on the bud, spray for the second time after five days, and the state of an illness takes a favorable turn, for the third time, sick leaf greening, fruit begins to grow up, and the decayed fruit phenomenon does not take place.

C) overlord spends the control efficiency of anthracnose:

The overlord spends anthracnose for early prevention, has carried out early stage sprinkling way, promptly carries out 1-2 times and spray on overlord Hua Xiaomiao, and anthracnose does not take place the result;

D) the controlling powdery mildew effect of China rose:

After the flower seedling transplanting, beat once in 10 days, totally three times, anthracnose does not take place in result throughout one's life.

According to small-scale control efficiency, carried out large-area test again and German import agricultural chemicals compares, it is as follows that it prevents and treats the result: see Table 1

Land for growing field crops plant contrast control efficiency experiment: table 1

Botanical name	The sick kind	Experiment quantity	Contrast agents	Control efficiency %
					Tomato	Gray mold	Each 100 strain	Thiophanate methyl	???30—40％
Soup of the present invention	???80—90％
		Grape	Two mildews	Each 50 strain				Hundred go out clearly	???10—30％
Soup of the present invention	More than 90%
					Strawberry	Gray mold	Each one mu	Thiophanate methyl	Below 30%
Soup of the present invention	???80—90％
		The overlord spends	Anthracnose	Each 10 strain				Hundred go out clearly	???20—30％
Soup of the present invention	???85—90％

Owing to take technique scheme to make the technology of the present invention compared with the prior art have following advantage and effect:

A) have the sterilization bacteriostasis, gray mold is had special efficacy, and effect a radical cure effectively, do not recur, pesticide resistance is little, simultaneously powdery mildew, anthracnose, bacterial wilt, ring spot, scab is also had good control efficiency;

B) raw material is easy to get, and the preparation method is simple, and cost is low, and is effective.

(4) embodiment:

Embodiment 1:

Get tobacco leaf 20kg, bitter dish 5kg adds water 250kg, heats 90 ℃ and decocts 10 minutes, and filter and remove residue is collected filtrate 210kg, adds male sulphur 0.5kg again, and boric acid 3kg is through fully being product after the stirring and dissolving.

Embodiment 2:

Get tobacco leaf 25kg, bitter dish 3kg adds water 204kg, heats 95 ℃ and decocts 15 minutes, and filter and remove residue is collected filtrate 175kg, adds male sulphur 0.8kg again, and boric acid 4kg is through fully being product after the stirring and dissolving.

Embodiment 3:

Get tobacco leaf 30kg, bitter dish 2kg,, add water 288kg, heat 93 ℃ and decocted 20 minutes, filter and remove residue is collected filtrate 242kg, adds male sulphur 1.0kg again, and boric acid 5kg is through fully being product after the stirring and dissolving.

Claims (1)

1, a kind of agricultural chemicals of preventing and treating plant botrytis is characterized in that it is the liquid pesticidal made from following materials of weight proportions and method:

3-5 parts of 0.5-1.0 parts of boric acid of 2-5 parts of male sulphur of 20-30 portions of bitter dishes of tobacco leaf

The tobacco leaf of said ratio, bitter dish are added 8-10 times of water, be heated to 90-95 ℃, decocted 10-20 minutes, filter and remove residue is collected decoction liquor, adds male sulphur of said ratio and boric acid again in decoction liquor, after abundant stirring and dissolving, be liquid pesticidal of the present invention.