CN111567546A

CN111567546A - Cyperaceae lawn weed control method

Info

Publication number: CN111567546A
Application number: CN202010458086.8A
Authority: CN
Inventors: 冯展咏; 钟健豪; 梁泽樟
Original assignee: Guangdong Biranmei Landscape Arts Co ltd
Current assignee: Guangdong Biranmei Landscape Arts Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2020-08-25

Abstract

The invention relates to a method for preventing and controlling weeds in sedge lawns, which adopts a certain proportion of big raspa, tall and witch grass No. 4 to weed the sedge lawns, the big raspa 5g/L, tall 0.50g/L and witch grass No. 4 10g/L provided by the invention are the optimal concentration proportion, the cyperus rotundus of Taiwan lawns treated by adopting the concentration proportion of the invention to prepare a mixed solution containing 30 percent of big raspa, 25 percent of tall and 25 percent of witch grass No. 4 has the best preventing and controlling effect, the plant control effect, the fresh weight control effect and the reduced chlorophyll content all reach more than 90 percent, the protein content is reduced by more than 72 percent, the normal planting of the lawns cannot be influenced in the process of eliminating the cyperus rotundus, compared with the cyperus rotundus on the market, the invention has strong weed inhibition capability and strong destructiveness to the weeds, meanwhile, the normal establishment of the lawn is not greatly influenced.

Description

Cyperaceae lawn weed control method

Technical Field

The invention relates to the technical field of lawn weed control, in particular to a sedge lawn weed control method.

Background

In lawn care, weed control is an important heavy and delicate task. Wherein, Cyperaceae weeds such as shortleaf kyllinga herb and cyperus rotundus have strong adaptability, developed underground tissues of rhizomes and tubers, violent trend, serious harm and the like, and are listed as world malignant weeds. Currently, in garden care, the control of such weeds relies mainly on artificial control and chemical control. The manual prevention and treatment is labor-consuming, time-consuming and labor-consuming, and the prevention and treatment is not thorough. Chemical control is mainly carried out by using herbicides. The herbicides in the market are of various types, most of the herbicides are matched with agricultural development, and the herbicides are developed aiming at lawns rarely or are immature, unsafe and high in cost. In recent years, research on the control of cyperaceae weeds has begun to appear, mainly aiming at cyperus rotundus. Is specially used for centipede and other cyperaceae. Some herbicides are investigated, for example: the green grass, Gongbaixiu, Zhuale and the like have good control effects on cyperaceae weeds such as cyperus rotundus and the like, but are expensive and are rarely applied to urban greening maintenance in a large scale. In addition, some herbicides cannot be applied to all lawns, have a good effect on some lawn varieties, and cause phytotoxicity on some lawn varieties. Therefore, it is very important to find a herbicide formula which has low cost, good control effect, high safety, little pollution and can be popularized and applied in a large scale.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a sedge lawn weed control method.

The invention provides a sedge lawn weed control method which is characterized by comprising the following specific operation steps:

s1: respectively putting 0.25g to 0.50g of tall, 3g to 5g of big raspberri and 5g to 10g of the larch No. 4 into different measuring cylinders;

s2: adding a small amount of clear water into a measuring cylinder filled with 0.25g-0.50g of Zoll, vibrating the measuring cylinder, and continuously adding clear water into the measuring cylinder filled with the Zoll after the solid granular Zoll is dissolved into turbid mother liquor to prepare 1L of Zoll solution;

s3: adding a small amount of clear water into the measuring cylinder filled with 3g to 5g of the big hoe sargassum, vibrating the measuring cylinder, and continuously adding the clear water into the measuring cylinder filled with the big hoe sargassum after the big hoe sargassum in solid particles is dissolved into turbid mother liquor to prepare 1L of big hoe sargassum solution;

s4: adding a small amount of clear water into a measuring cylinder filled with 5g-10g of the number 4 of the witches green, shaking the measuring cylinder, and continuously adding clear water into the measuring cylinder filled with the number 4 of the witches green after the solid granular witches green 4 is dissolved into turbid mother liquor to prepare 1L of the number 4 solution of the witches green;

s5: preparing the mixed solution in S2, S3 and S4 into a mixed solution containing 30% of big-leaved beetle, 25% of tall and 25% of the witch green No. 4, and adding the mixed solution into a handheld sprayer;

s6: spraying clear water to soil to keep the lawn moist for one day;

s7: under the condition of good weather, the pesticide is sprayed by a hand-held sprayer at the time of 8:00-9:00 or 16:00-18: 00.

Further, the pelargonium mass in S1 is specifically 0.5g, the jacara mass is specifically 5g, and the witchhazel # 4 mass is specifically 10 g.

Further, the concentration of the Zoll solution in S2 is specifically 0.5 g/L.

Further, the concentration of the big hoe sarba solution in the step S3 is specifically 5 g/L.

Further, the concentration of the solution of the scarlet No. 4 in the S4 is 10 g/L.

Further, the good weather condition is particularly clear and windless weather.

The invention has the following beneficial effects: compared with the prior art, the hoecheveria 5g/L, Zollinger 0.50g/L and the zoysia 4 No. 10g/L are optimal concentration ratios, the medicaments in the ratios are mixed to form the mixed solution containing 30% of the hoecheveria, 25% of the Zollinger and 25% of the zoysia 4 No. by adopting the mixed solution, and the mixed solution is used for weeding the sedge lawn, so that the normal planting influence on the lawn is small, the weed inhibition capability is strong, the weed destruction is strong, and the weeding effect is excellent.

Detailed Description

The present invention will be further illustrated with reference to the following specific examples.

A sedge grass weed control method is characterized by comprising the following specific operation steps:

s6: spraying clear water to soil to keep the lawn moist for one day;

The Zhuale mass in S1 is specifically 0.5g, the 5g Pirasha mass is specifically 5g, and the Shiqing No. 4 mass is specifically 10 g.

The concentration of the Zoll solution in S2 is specifically 0.5 g/L.

The concentration of the big hoe sarba solution in the S3 is specifically 5 g/L.

The concentration of the solution of the chickweed No. 4 in the S4 is 10 g/L.

The good weather condition is particularly clear and windless weather.

Example 1

S1: respectively putting 0.25g, 0.35g and 0.50g of tall, 3g, 4g and 5g of big-leaf raspberri and 5g, 7g and 10g of larch No. 4 into different measuring cylinders;

s2: respectively adding a small amount of clear water into measuring cylinders filled with 0.25g, 0.35g and 0.50g of Zoll, vibrating the measuring cylinders, and continuously adding clear water into the measuring cylinders filled with Zoll after the Zoll in solid particles is dissolved into turbid mother liquor to respectively prepare 1L of Zoll solution;

s3: adding a small amount of clear water into the measuring cylinders filled with 3g, 4g and 5g of the raspberries respectively, oscillating the measuring cylinders, and continuously adding the clear water into the measuring cylinders filled with the raspberries after the solid granular raspberries are dissolved into turbid mother liquor to respectively prepare 1L of solution of the raspberries;

s4: respectively adding a small amount of clear water into measuring cylinders filled with 5g, 7g and 10g of the number 4 of the chickweed, vibrating the measuring cylinders, and continuously adding clear water into the measuring cylinders filled with the number 4 of the chickweed after the solid granular number 4 of the chickweed is dissolved into turbid mother liquor to respectively prepare 1L of the number 4 of the chickweed solution;

s5: adding the mixed solution in the S2, the S3 and the S4 and 1L of clean water into different handheld sprayers respectively, wherein 9 groups of herbicide handheld sprayers and 1 group of clean water handheld sprayers are used;

example 2

S1, fixing the green nylon ropes with nails to divide the cells into 40 total cells, wherein each cell has 1m × 1 m-1 m²Random block arrangement is adopted, and isolation zones of 0.5m × 1m are arranged between adjacent cells;

s2: spraying clear water to soil to keep the lawn moist for one day;

s3: under the condition of good weather, spraying the pesticide by using a hand-held sprayer at the time of 8:00-9:00 or 16:00-18: 00;

s4: during spraying, 9 groups of herbicide handheld sprayers are sprayed in 36 areas randomly, wherein each group is divided into four batches;

s5: meanwhile, 1 group of clean water hand-held sprayers are divided into four batches and respectively sprayed in the remaining 4 areas.

Example 3

Observing and recording phytotoxicity symptoms appearing before and after the herbicide is sprayed on the cyperus rotundus in each cell at 5d after the herbicide is applied, 10d after the herbicide is applied, 15d after the herbicide is applied and 20d after the herbicide is applied, expressing the morphological change of the cyperus rotundus by adopting a phytotoxicity grading method, recording an observation and recording table, respectively calculating the plant control effect, removing residual cyperus rotundus weeds in each cell at 20d after the herbicide is applied, weighing the fresh weight after the cyperus rotundus is cleaned and dried, calculating the fresh weight control efficiency, and measuring the chlorophyll and soluble protein contents at 5d after the herbicide, 10d after the herbicide and 20d after the herbicide is applied.

The calculation formula of the plant control effect of 5d, 10d and 15d after the medicine is shown as

The calculation formula of the plant control effect and fresh weight control effect after 20 days of pesticide application is as follows:

the phytotoxicity grading method comprises the following steps: grade 0 indicates normal growth of root, stem and leaf; grade 1 indicates that the leaves are green and yellow and the rotten area is less than 10%; grade 2 represents the green and yellow leaves and the rotten area is 10-20 percent; grade 3 represents the green and yellow leaves and 20-30% of rotten area; 4 level represents the transition of the green and yellow leaves to the withered and yellow leaves, and the rotten area is 30 to 40 percent; grade 5 indicates that the leaves are withered and yellow and the rotten area is 40-50 percent; grade 6 indicates that the leaves are withered and yellow and the rotten area is 50-60 percent; grade 7 indicates that stem leaves are dead and rotten, the rotten area is 60-70%, and the roots are rotten; grade 8 indicates that stem leaves are dead and rotten, the rotten area is 70-80%, and the roots are rotten; grade 9 indicates that the stem leaves are dead and rotten, the rotten area is more than 80%, and the roots are all rotten.

Example 4

The plant height and chlorophyll content of the Taiwan lawn are measured before the herbicide is applied, 10 days after the herbicide is applied and 20 days after the herbicide is applied, and the changes of the Taiwan lawn before and after the herbicide is treated are compared to obtain the safety condition of the herbicide with each concentration on the Taiwan lawn. When measuring the plant height, 20 Taiwan grass plants are respectively and randomly extracted from four corresponding cells in each herbicide and clear water contrast area with each concentration, the plant height is respectively measured by using a measuring ruler, the plant height of one cell is obtained by taking an average value, and finally the average value of the four cells is the average plant height (cm) of the Taiwan grass plants in the herbicide treatment area with one concentration. And measuring chlorophyll content and plant height values of the herbicides with different concentrations.

The calculation formulas of the chlorophyll content inhibition rate and the plant height inhibition rate are as follows:

example 5

1) According to the absorption of the chlorophyll extracting solution to the visible spectrum, the total chlorophyll amount of the extracting solution can be obtained by measuring the primary optical density (D652) at the wavelength by utilizing the intersection of absorption peaks of chlorophyll a and chlorophyll b at 652nm and utilizing that the two have the same specific absorption coefficient (both 34.5);

2) coomassie brilliant blue G-250 exists in two different color states, red and blue, i.e., it changes from red to blue upon binding to proteins, and also changes the maximum wavelength absorption from 465nm to 595 nm. Respectively putting the cyperus rotundus sample in a mortar in each cell, adding phosphate buffer solution, grinding, washing into a 10ml centrifuge tube, centrifuging at 12000r/min for 10min, measuring the value at OD595, obtaining the protein mass in 1ml sample extract according to a standard curve, and calculating the protein content in the sample according to a formula;

3) and (4) processing four corresponding cells by 10 cells, respectively measuring numerical values, averaging, and recording and sorting. Differential significance analysis was performed at a level of 0.05 using the SPSS data analysis system.

From example 1 to example 4:

TABLE 19 record of the control effect of herbicide concentration and clear water control area

It can be seen from table 1 that the control effects of different herbicides on cyperus rotundus are different, and the plant control effect and fresh weight control effect of each treatment room are different and obvious. After 20 days of herbicide treatment, fresh weight control effects of 5g/L of the big leaf raspberries, 0.50g/L of the tall leaf, 10g/L of the larch No. 4 and 4g/L of the big leaf raspberries all reach over 90 percent, the phytotoxicity level reaches 9, and the cyperus rotundus dies. The fresh weight control effect is poor, the phytotoxicity level is low, the roots of the cyperus rotundus do not rot, the rotted area of the leaves is small, and the fresh weight control effect of 0.25g/L Zole and 5g/L of No. 4 witchhazelnut is the worst, but is more than half. The cyperus rotundus treated 5 days after the application shows little phytotoxicity symptom, and the herbicide has the efficacy, but the damage to the cyperus rotundus is low. At 10 days after application, the cyperus rotundus weed leaves treated by each herbicide are withered and yellow, and rotted area occupies about half of the area of the leaves. 0.25g/L of Zole and 5g/L of No. 4 of the witch hazel are slightly deepened in the period of 10d-20d after the drug is applied, but the cyperus rotundus with deepened symptoms is reduced, the plant control effect is respectively reduced from 79.41 percent to 73.16 percent and 71.53 percent to 65.23 percent, and the drug effect of the low-concentration herbicide on the cyperus rotundus is insufficient.

From example 1 to example 5:

TABLE 2 Table for change of chlorophyll content of each treated Cyperus rotundus L

TABLE 3 soluble protein content variation table for each treatment of Cyperus rotundus L

TABLE 4 high impact of each treatment on Taiwan lawn plants

TABLE 5 Effect of the treatments on chlorophyll content of Taiwan lawn

As can be seen from table 2, the treatment of each herbicide concentration produced an inhibitory effect on the chlorophyll content of cyperus rotundus, and the inhibitory effect was more pronounced with time. After the herbicide is applied for 10 days, the chlorophyll content of the big hoe is greatly reduced by 5g/L and 0.50g/L, the concentration of other herbicides is reduced in different ranges compared with that of the big hoe after the herbicide is applied for 5 days, the photosynthesis is inhibited, the production of nutrient substances is reduced, and the damage of the cyperus rotundus is further aggravated. At 20 days after the medicine is taken, the content of chlorophyll of the nutgrass galingale rhizome treated by the big raspberries is very low, the leaves are withered and the life activity stops, wherein the big raspberries are 5g/L, 0.50g/L, 10g/L of the larch No. 4 and 4g/L of the big raspberries. The chlorophyll content of the witch hazel No. 4 and the Zoll 0.25g/L is not changed greatly after 10 days and 20 days, and the chlorophyll content of the cyperus rotundus is slightly increased after 20 days, when the Zoll 0.25g/L is used after the drug, the drug harm level is 5 levels at 15 days and 20 days after the drug, which shows that the damage of the cyperus rotundus caused by the 0.25g/L treatment is not further deepened around 20 days after the drug, while the 0.50g/L treatment is continuously aggravated between 5 days after the drug and 20 days after the drug, the chlorophyll content is sharply reduced, which shows that different concentrations of the same herbicide have different degrees of inhibitory effect on the chlorophyll content of the cyperus rotundus, and the effect of high concentration is more obvious compared with that of low concentration.

As can be seen from Table 3, the differences between the protein contents of the individual treatments were not significant at 5d post-treatment. At 10d post-dose, the change in protein content was significantly manifested, with a 22.03% to 64.46% reduction in all herbicide concentration treatments. The three concentrations of the herbicide, the rasagilawood, decreased faster from 5d after the application to 10d after the application, indicating that the herbicide, the rasagilawood, exhibited a good pharmacodynamic effect during this period. At 20 days after the application, the protein content is remarkably reduced compared with that of a clear water control area, the minimum content is respectively 5g/L of big-leaf rassa, 10g/L of witch-grass 4 and 0.50g/L of tall, especially 5g/L of big-leaf rassa, and the protein content is only 0.491mg/g, which shows that although the herbicide can inhibit the activity of acetolactate synthase (ALS), the biosynthesis of amino acid is prevented, and the protein synthesis of cyperus rotundus is hindered, but the process takes a certain time to have remarkable effect. The difference between the protein contents of the No. 5g/L and Zole 0.25g/L of the witch hazel 4 and the content of the witch hazel 5d after the drug is taken is very small, the duration of the drug effect is not enough, and the synthesis of amino acid is not greatly inhibited.

As shown in Table 4, the plant height inhibition rates of the big grass sedge 3g/L and the big grass sedge 4g/L are respectively 4.04 percent and 1.63 percent which are slightly larger than the inhibition rates of other herbicide concentrations 10d after the application of the herbicide, and the inhibition effects of the other herbicide concentrations are lower than 1 percent, wherein the tall grass 0.25g/L, the tall grass 0.50g/L and the clear water control area do not inhibit the plant height of the Taiwan lawn but have a tiny promotion effect, and the Taiwan grass possibly has a resistance effect on the flazasulfuron under certain stress environment. The plant height inhibition effect of the big grass carpel 3g/L, the big grass carpel 4g/L, the big grass carpel 5g/L, the tall grass 0.35g/L and the witch grass 4 No. 10g/L is slightly larger than that of other herbicides after being applied for 20 days, but is also 0.53-1.35%, and the plant height inhibition rate of the big grass carpel is weakened compared with that of the big grass carpel 10d after being applied, so that the normal establishment of Taiwan lawns is not influenced.

From Table 5, 10 days after application, the inhibition rate of 5g/L of big hoe sedge, 4g/L of big hoe sedge and 0.50g/L of tall oil on the chlorophyll content of Taiwan grass is more than 1 percent, and the concentration of other herbicides is less than 1 percent. After 20 days, the chlorophyll content inhibition rate is 0.50g/L, 1.13%, and the chlorophyll content inhibition rate of each treatment is in a weakening trend. Compared with the high-concentration herbicide, the low-concentration herbicide has obvious inhibiting effect on the Taiwan lawn, and the concentration of the three herbicides has no great damage to the normal planting of the Taiwan lawn in the aspect of the plant height and chlorophyll content change conditions of three 40 plots before, 10 days after and 20 days after the herbicide.

Example 6

Taking 500ml of a raschella nepalensis with a concentration of 5g/L, 500ml of a tall with a concentration of 0.50g/L, 500ml of a strand 4 with a concentration of 10g/L, 500ml of a mixed solution consisting of 30% of a raschella nepalensis with a concentration of 5g/L, 25% of a tall with a concentration of 0.50g/L and 25% of a strand 4 with a concentration of 10g/L, 500ml of a mixed solution consisting of 25% of a raschella nepalensis with a concentration of 5g/L, 30% of a tall with a concentration of 0.50g/L and 25% of a strand 4 with a concentration of 10g/L, and 500ml of a mixed solution consisting of 25% of a raschella nepalensis with a concentration of 5g/L, 25% of a tall with a concentration of 0.50g/L and 30% of a strand 4 with a concentration of 10g/L, and adding the mixed solution into different handheld sprayers respectively;

s1, fixing the green nylon ropes with nails to divide the cells into 6 cells in total, wherein each cell has 1m × 1 m-1 m²Random block arrangement is adopted, and isolation zones of 0.5m × 1m are arranged between adjacent cells;

s2: spraying clear water to soil to keep the lawn moist for one day;

s4: during spraying, 6 groups of herbicide handheld sprayers are randomly sprayed in 6 areas respectively;

s5: after 5 days, 6 plots were observed for weed status.

In conclusion, the big hoe is prepared by taking the big hoe sand 5g/L, the tall 0.50g/L and the witch grass No. 4 and the 10g/L as the optimal concentration ratios, and meanwhile, the giant typhonium rhizome of the Taiwan lawn containing the mixed solution of 30% of big hoe sand, 25% of tall and 25% of the witch grass No. 4 is prepared according to the concentration ratios of the big hoe sand, so that the big hoe has the best preventing and removing effect, the maximum efficiency and the shortest time, the plant preventing effect, the fresh weight preventing effect and the reduced chlorophyll content reach more than 90%, meanwhile, the protein content is reduced by more than 72%, meanwhile, the influence on the normal planting of the lawn is small, the weed inhibiting capability is strong, meanwhile, the destructiveness on weeds is strong, and the good weed removing effect is achieved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A sedge grass weed control method is characterized by comprising the following specific operation steps:

s6: spraying clear water to soil to keep the lawn moist for one day;

2. The method for controlling sedge grass weeds of claim 1, wherein the pell mass in S1 is specifically 0.5g, the 5g of the grubbs is specifically 5g, and the zoysia 4 is specifically 10 g.

3. A method of controlling sedge grass weeds of claim 1, wherein the concentration of the zeolum solution in S2 is in particular 0.5 g/L.

4. The method for controlling sedge grass weeds of claim 1, wherein the concentration of the solution of big grass carpel in S3 is 5 g/L.

5. The method for controlling sedge grass weeds of claim 1, wherein the concentration of the solution of scarlet No. 4 in S4 is 10 g/L.

6. A method of controlling sedge grass weeds of claim 1, wherein the good weather conditions are particularly clear and calm weather.