How long after using multi effect frustration can I fill with water

I developed after using multi-effect frustration.

Generally, it is basically absorbed after three hours, so many pesticides can be sprayed without rain for three hours.

Spraying, if it rains within three hours, it needs to be sprayed again.

Paclobutrazol coating ring is on the main trunk of the peach tree or at the base of the main branch, scrape off the coarse old warped skin around it with a scraping tree, about 10 cm wide from top to bottom, and apply it with a brush with a concentration of 3000 4000 milligrams of paclobutrazol solution (equivalent to 50 times), and then wrap it with newspaper or plastic film. This method is simple, easy to operate, and has a fast pharmacodynamic response, but the efficacy period is short, and it is rarely used in production at present.

The tree itself is weak, why use paclobutrazol? The harm of paclobutrazol in soil cavities is still relatively large! If it is indeed new, or the branches of the year are relatively prosperous, you can spray a new little! At the same time, combined with the underground adjustment of the fertilizer program, it can stabilize the tree and promote the tree to be healthy!

OK. Application time. Wangchang peach trees can be applied to the soil during the flower bud expansion period in spring, and the early application can exert the effect of the pesticide to control the growth of new shoots and improve the fruit setting rate.

For peach trees with moderate growth, pesticides were applied during the vigorous growth period of new shoots (about 20 cm in length of new shoots) after flowering to control the occurrence and growth of their secondary branches. Peach trees with moderate and weak growth can be sprayed with 500-1000 mg of paclobutrazol on the tree in August to improve the quality of flower buds. It should be noted that 1-2-year-old young trees and weak trees should not be applied.

Application rate. The application rate is mainly determined according to the age of the tree, the strength of the tree, the size of the canopy, the type of variety and other factors. Wangshu, big trees should be applied more, on the contrary, less applied, late **, yellow dew and other varieties of yellow-fleshed peaches should generally be less than Shanghai honey, Okubo and other varieties of southern peaches 10--20.

For the first application, 0 50-1 grams per square meter of crown projection (referring to the commercial amount of paclobutrazol wettable powder containing active ingredient 15).

The effect was obvious for 3 years after soil application, and the effect was the most significant in the first year, and then decreased. How to apply pesticides in the second year, according to the growth and development of the peach tree to determine: after the first year of application, the peach tree formed medium and long fruit branches accounted for about 30 of the total number of branches, and a small number of secondary branches were extracted.

It shows that the application amount is appropriate, and the application amount of the next year is about 50 of the application amount of the previous year; If the proportion of medium and long fruit branches extracted from the peach tree is large, and more and more vigorous secondary branches are extracted, it means that the pesticide application in the previous year is less, and the pesticide application amount of the next year should be more than 60 of the pesticide application amount of the previous year; If the fruiting branches are mostly short fruit branches, bouquet-shaped fruit branches, and the medium and long fruit branches are weak and drooping, it means that the amount of pesticide is too large, and the next year should be no or less pesticide application. If the application amount is too large, it will inhibit the growth of peach trees too heavy, so it should be detected as soon as possible, and spray 50 mg kg of gibberellin in time to reduce its inhibitory effect.

Application method. It has been proved by most experts that paclobutrazol is the best effect on soil application. The method is to dig a 10 cm deep and 30-50 cm wide annular ditch on the inner side of the outer edge of the crown projection, dilute the agent into 1000-2000 times the liquid with water, and then sprinkle the prepared liquid evenly in the annular ditch, and cover the soil after water seepage.

During the application process, the prepared liquid should be stirred continuously to prevent precipitation, resulting in uneven application and affecting the effect after application. It is also possible to excavate the annular ditch according to the above-mentioned method, mix the powder with fine soil, evenly sprinkle it in the ditch, mix it well with a shovel and a shovel, and water it after covering the soil.

Post-application management. After the application of paclobutrazol in peach trees, the formation of flower buds increased, the fruit setting rate increased, and the yield increased. Therefore, it is necessary to strengthen the management of soil, fertilizer and water to meet the needs of their growth and fruit.

When pruning in winter, the amount of flowers should be adjusted, the stubbing should be appropriately weighted, and the short fruit branches and bouquet-like fruit branches that are too dense and too weak should be thinned. After fruit set, it is necessary to thin the fruit and adjust the amount of fruit to prevent too much fruit, affecting the quality of the fruit, weakening the tree, and accelerating the aging of the peach tree.

No problem at all, usually not a big problem in the afternoon after half a day.

How long does it take for a fruit tree to use paclobutrazol in the rain.

Ming Li Shizhen's "Compendium of Materia Medica" sugar strips:"Sugar, white sugar also, condensed into cake pieces for granulated sugar"。Qing Zhang Shu's "Liangzhou Foreign Objects" said:

Sugar is not a stone, and the name of fake stone is also. It is actually sugarcane juice fried and violent, condensed like stone and the body is very light, so it is called sugar"。There are two types of sugar, namely red sugar and white sugar.

Spray with 300g of 10% wettable powder 667m2 to 50L of water.

In the seedling field with long seedling age, at the seedling 1 leaf and 1 heart stage, 300g of 10% wettable powder 667m2 and 50L of water are sprayed to control the height of seedlings and cultivate strong seedlings with more tillers and strong root power. After transplanting, at the panicle differentiation stage, spray with 10% wettable powder 180g 667m2 and water 50 60L to improve the plant shape, make it dwarf and reduce lodging.

The value of paclobutrazol in agricultural applications lies in its controlling effect on crop growth. It has the effects of delaying plant growth, inhibiting stem elongation, shortening internodes, promoting plant tillering, promoting flower bud differentiation, increasing plant stress resistance, and improving yield.

In the rice one leaf, one core to two leaves of the stage with paclobutrazol per square gram spray seedlings, before spraying the water in the field drain the field, 24-48 hours later, and then irrigate back to the field, to the water does not submerge the seedling core.

Paclobutrazol has a significant effect on round-broad-leaved plants, but is not effective on elongated plants.

Paclobutrazol, codenamed PP333, is a systemic and widely used plant growth retardant and regulator. Low toxicity to mammals, birds, fish and invertebrates. It can be absorbed by the roots, stems and leaves of plants, and the rhizome absorption has an effect on the whole plant; Foliar absorption only works locally.

When applied on a variety of fruit trees, it can inhibit the growth of roots and nutrients; Increases chlorophyll content; It inhibits the growth of terminal buds, promotes the germination of side buds and the formation of flower buds, increases the number of flower buds, increases the fruiting rate, improves fruit quality, and improves cold resistance. In addition, paclobutrazol also has a certain bactericidal effect and inhibition of a variety of weeds.

Paclobutrazol is an inhibitor of endogenous gibberellin synthesis, which has a great inhibitory effect on the tree body and can cause adverse effects if used incorrectly. Therefore, in the use of paclobutrazol, it should be based on the principle that the fruit tree reaches a certain growth amount and enough flower bud formation. It should be used according to the reaction of different fruit tree varieties, such as citrus mandarins, peaches, grapes, etc., which are very sensitive to it, and have an effect in the year after use; For apples, pears, etc., its effect is relatively slow, and it often has an effect in the following year.

Generally, it is used in young trees and has a faster effect than in adult trees; Soils with a lot of clay and organic matter have a poor effect on paclobutrazol, and orchards with too vigorous fruit trees or poor fertilizer and water management should not use paclobutrazol. Useful use of paclobutrazol related to technical points.

1. The liquid medicine should be used with the mixture; 2. The spraying should be uniform and thoughtful, and the drip of the liquid spraying wet canopy should be the degree; 3. Choose to spray before 10 a.m. or after 4 p.m. on a windless and sunny day; 4. Rational use of medicine, according to the variety of fruit trees, the size of the crown, and the strength of the tree. Generally, the soil application rate is grams of active ingredients; Foliar sprays are 150 600 times of 15% paclobutrazol wettable powder, and spray 2 or 3 times as appropriate. Experiments have shown that foliar sprays are effective quickly, but the validity period is short, and the effect is better if foliar sprays are combined with root applications.

After tillering and before jointing, there is a period of time (generally at the beginning of the month) is the time for wheat seedlings, and it is best to combine the application of jointing fertilizer and the spraying of paclobutrazol during this time.

Spray the whole plant from the one leaf and one heart stage to the early stage of jointing.