CN1293900A - Aquatic stemonine solution as plant insecticide - Google Patents

Abstract

A plant insecticide for killing plant pests, mold and fungus is prepared from stemona root, Tripterygium wilfordii and flavescent sophora root through extracting. Its advantages include high effect, broad spectrum, low toxin, easy decomposing, no residue and no environmental pollution.

Description

Aquatic stemonine solution as plant insecticide

The present invention is the natural botanical insecticide that processes through extraction with the multiple plant that insecticidal activity arranged such as tuber of stemona.

Insects such as aphid, cabbage caterpillar, two spotted spider mite, Oulema oryzae, pine caterpillars have brought great harm and economic loss for vegetables, tealeaves, paddy rice, trees.And prevent and treat the insecticide that these damage by disease and insect still adopt chemosynthesis now, as dichlorvos, chrysanthemum lipid etc., not only can develop immunity to drugs, so that control efficiency descends, but also can cause organic harmful substances residual in vegetables, tealeaves, cereal crops, soil, and the user poisons etc. accidentally, the serious harm human health has also caused enormous economic loss aspect foreign exchange earning.In order to solve this difficult problem, also released many vegetable insecticides in recent years successively, but major part contains tobacco leaf in its prescription.Still can residual harmful carcinogen-nicotine on crops such as vegetables, tealeaves; Their physical and chemical index instability simultaneously, it is relatively poor that the spectrum of damage by disease and insect is killed effect.As the green spirit tablet vegetable insecticide that the friendly environment friendly agricultural in Tianjin three Industrial Co., Ltd. produces,, as follows to its 24 hours insecticidal toxicity measurement results through Plant Protection institute, Chinese Academy of Agricultral Sciences:

The insect name	Kill the time (hour)	Extension rate	Kill ratio (%)	Extension rate	Kill ratio (%)	Extension rate	Kill ratio (%)	Extension rate	Kill ratio (%)
										Aphid	????24	???600	????92.3	?800	?90.2	?1200	?60.1	?1500	?31
Two-spotted spider mite	????24	???600	????54.2	?800	?43.1	?1200	?32.1	?1500	?20.1
										Cabbage caterpillar	????24	???600	????78.3	?800	?61.2	?1200	?40.1	?1500	?31.2
Pine caterpillars	????24	???600	????21.5	?800	?10.5	?1200	????0	?1500	????0
										Oulema oryzae	????24	???600	????5	?800	????0	?1200	????0	?1500	????0

The measurement result explanation, relatively poor except that aphid being had the better insecticidal effect to the killing effect of its damage by disease and insect of base, also need composite other chemical insecticide to come onset as using.

In order to address the above problem, vegetable insecticide is really reached efficiently, low toxicity, the effect of wide spectrum the invention provides a kind of aquatic stemonine solution as plant insecticide.

The technical solution used in the present invention is:

Aquatic stemonine solution as plant insecticide is by Chinese herbal medicine extract, high osmotic agent, and the preservative emulsifier is formed; Wherein Chinese herbal medicine extract is extracted by the tuber of stemona, Thunder God Teng, kuh-seng, Rhododendron molle, the fruit of Chinese wolfberry, the tuber of stemona, Thunder God Teng, kuh-seng, the fruit of Chinese wolfberry are decocted with 65 degree-75 degree vacuum decompressions respectively, and alcohol precipitation, being condensed into proportion is the 1.050-1.100 soup; Rhododendron molle is reclaimed ethanol after with 95% ethanol cold soaking, is condensed into the soup that proportion is 0.850-0.950.The amount of each component is as follows in per 100 milliliters of Chinese herbal medicine insecticides:

The tuber of stemona 30%

Thunder God Teng 20%

Kuh-seng 18%

Rhododendron molle 10%

The fruit of Chinese wolfberry 10%

Azone 1%

Preservative 1%

Emulsifier 10%

Adopt the contained alkaloid of Thunder God Teng to kill cabbage caterpillar, daikon leaf beetle, Oulema oryzae, insects such as cucumber beetle, dicladispa armigera, pine caterpillars; The contained alkaloid of the tuber of stemona kill citrus oh, kind of insect surplus cabbage caterpillar, cutworm etc. ten; The contained alkaloid of kuh-seng is killed two spotted spider mite, aphid and bacterium, fungi; The contained Rhomotoxin of Rhododendron molle is killed insects such as aphid, cabbage caterpillar, two spotted spider mite, pine caterpillars, emperor worm; The contained sweet this biostimulation agent of alkali altogether of the fruit of Chinese wolfberry promotes the growth of plant.Above prescription has reached efficient through facts have proved, wide spectrum, low toxicity, easily decomposes in air and soil, do not have accumulate, pollution-free, be difficult for producing drug resistance, also can stimulate the Chinese herbal medicine insecticide of crop growth.

Batch process during 1997 to 2000 is on probation, to killing various plant insects, promotes that plant growing has obtained breakthrough effect.1 999 year was carried out 24 hours poison through Tianjin Nankai University to this insecticide, and to measure its result as follows:

The insect name	Kill the time (hour)	Extension rate	Kill ratio (%)	Extension rate	Kill ratio (%)	Extension rate	Kill ratio (%)	Extension rate	Kill ratio (%)
										Aphid	????24	?600	????100	?800	????100	?1200	?97.7	?1500	?93.5
Two-spotted spider mite	????24	?600	????100	?800	????100	?1200	?96.5	?1500	?91.0
										Cabbage caterpillar	????24	?600	????100	?800	????100	?1200	?98.6	?1500	?95.2
Pine caterpillars	????24	?600	????100	?800	????100	?1200	?97.5	?1500	?90.5
										Oulema oryzae	????24	?600	????100	?800	????100	?1200	?96.3	?1500	?91.1

1 999 year is on probation through Hebei province institute of agricultural sciences vegetables experimental field, and except that having good insecticidal effect, it promotes plant production, and production-increasing function is also more obvious.Evidence only one in tomato increases production 25% than control group the same period, and every mu of consumption 50ML closes 0.19 yuan of RMB simultaneously.Prove that through experimental applications this invention has really reached efficiently, wide spectrum, cheapness, low toxicity, in air and soil, easily decompose, do not have accumulate, pollution-free, be difficult for developing immunity to drugs, also can stimulate the effect of crop growth, volume increase.

Embodiment:

At first with the tuber of stemona, Thunder God Teng, kuh-seng, the fruit of Chinese wolfberry is made the coarse crushing particle respectively, 10 times of normal-temperature water that then each medicine added dose are respectively carried out single immersion 3-4 hour, adopt 65 degree-75 degree vacuum decompressions, decocted 1 hour, the elimination soup, 8 times of normal-temperature water that add dose again adopt 65 degree-75 degree vacuum decompressions to decoct again 1 hour, abandon the dregs of a decoction, merge decocting liquid twice, adopt 65 degree-75 degree vacuum decompressions to decoct again, being condensed into proportion is 1.200-1.300 medicinal extract, uses 95% precipitation with alcohol after 48 hours again, reclaim ethanol, be about to said medicine and make the soup that proportion is 1.050-1.100 respectively, and Rhododendron molle adopts 95% ethanol cold soaking, one week back to reclaim ethanol, making proportion is the 0.850-0.950 soup, carry out compositely then according to the aforementioned formula ratio, can gets final product.

Claims (1)

1, a kind of aquatic stemonine solution as plant insecticide is characterized in that: by Chinese herbal medicine extract, high osmotic agent, preservative, emulsifier are formed; Wherein Chinese herbal medicine extract is extracted by the tuber of stemona, Thunder God Teng, kuh-seng, Rhododendron molle, the fruit of Chinese wolfberry, the tuber of stemona, Thunder God Teng, kuh-seng, Rhododendron molle, the fruit of Chinese wolfberry are divided in addition decoct with 65 degree-75 degree vacuum decompressions, and alcohol precipitation, being condensed into proportion is the 1.050-1.1000 soup; Rhododendron molle is reclaimed ethanol after with 95% ethanol cold soaking, is condensed into the soup that proportion is 0.850-0.950.The amount of each component is as follows in per 100 milliliters of Chinese herbal medicine insecticides:

The tuber of stemona 30%

Thunder God Teng 20%

Kuh-seng 18%

Rhododendron molle 10%

The fruit of Chinese wolfberry 10%

Azone 1%

Preservative 1%

Emulsifier 10%