How to use lime to control weeds and then prevent weeds from growing again? Quicklime or hydrated li

In fact, weeds and crops are a trade-off relationship, if a piece of land is lush with crops, there will be few weeds, if the crops grow very sparsely, weeds will definitely grow very vigorously. The concept of weeds mostly refers to the herbs that are useless or harmful to humans, but there are many types of weeds, and some weeds are parasitic, parasitic on other plants from the beginning to absorb nutrients to make themselves grow; Some weeds spread pests and diseases, and these weeds contain toxins that can harm people and animals.

The ability of weeds to reproduce is very powerful, almost pervasive, photosynthetic.

It is also much stronger than crops, the existence of weeds is easy to compete with crops for nutrients, water, sunlight, space, etc., and will also deteriorate the environment in the field, which will lead to lower yield and quality of crops, about 9% to 11%, so there will be many people will remove weeds in their fields, and then we will talk about how to reduce weeds in the field as much as possible

The first is manual or mechanical removal, when the weeds in the field begin to grow, the manual finds and pulls out the weeds in time, takes them out of the field and destroys them. Before sowing, the soil must be deeply cultivated with machinery, so that the weeds will wither and die in the ground, but this is not very effective.

The second is with quicklime.

Deal with the soil that is about to be sown, with this kind of thing will disinfect the land, and can also reduce the growth of weeds, quicklime will emit a lot of heat if it encounters water, so that it can kill pests in the soil, and can also burn some weed roots in the soil, so that weeds no longer germinate, each acre of land can be sprinkled with 50-100 kg of quicklime, deep turning the land to a depth of 30 centimeters, and then water the land with water, so that the quicklime fully reacts, It can be covered with mulch film to give the best effect.

The third is the use of chemical herbicides.

This is also one of the most widely used weeding methods so far, and it is also the most effective one, for different types of weeds, matching different chemical agents, there are more targeted herbicides, for example, some can remove deep roots and broad-leaved weeds for one to two years, there are many targeted pesticides, we can also mix many herbicides according to their own needs, and can also improve weeding efficiency, here I hope you can reduce the amount of herbicides, so as not to cause pesticide residues in crops, Doing so can reduce the damage to crops and be more conducive to the growth of crops.

The last one is water-drought rotation, which is more suitable for people who have the conditions, just like rice and wheat rotation, so that the weeds that grow in the arid environment are flooded and isolated from the air and die, which will greatly reduce the number of weeds.

Quicklime powder has the effect of sterilization and disinfection, but has no effect of weeding, and slaked lime does not have this effect. If you want to get rid of weeds, you can only go to a pesticide store and consult to buy herbicides.

Treat the soil that is about to be sown with quicklime, treat the land with quicklime, and can also reduce the growth of weeds, quicklime will emit a lot of heat if it encounters water, so that it can kill pests in the soil, and can also burn some weed roots in the soil, so that weeds no longer germinate.

Each acre of land can be sprinkled with 50-100 kg of quicklime, deep turning the land to a depth of 30 centimeters, and then watering the land with water to let the quicklime fully react, so that the effect of covering the mulch film can be achieved after treatment.

Lime is the same as peat, lignite, weathered coal, lime, gypsum, vermiculite, zeolite, perlite, and sepiolite. It is also an important soil amendment.

Hello, grass ash and lime are both alkaline and can be mixed, and there is no conflict between the two. Lime; It can neutralize the pH in the soil, which is conducive to the growth of the root system, is conducive to the absorption and utilization of nutrients in the soil by the root system, and can be sterilized and eliminated by imitation or poison. Pest control, lime high calcium content, April to May can be in the citrus orchard lime powder sprinkled throughout the garden, after the rain surface soil moist to sprinkle lime powder, sprinkle lime to improve the peel calcium less cracking, eliminate surface moss, reconcile soil acidity, developed roots can absorb fertilizer nutrients.

The use of lime is very much, sprinkle lime powder in the chicken pen can be disinfected and sterilized, prevent chicken fleas, insects and mosquitoes, etc., lime sprinkled into the fish pond can disinfect the water in the fish pond, kill bacteria and purify the water quality. Plant ash; Grass ash is rich in organic potassium, organic phosphorus is very good organic nutrient fertilizer for plants, mixed with plant ash and chicken and cow dung to apply citrus fruit trees, the fruit is uniform and bright, very sweet, and the whole fruit ripens early. The use of plant ash is also very extensive, with plant ash sprinkled chicken pen chicken stupid seepage feces, chicken manure does not stink but also eliminate the source of insects, to prevent flies, nematodes, chicken fleas, chicken lice breeding, disinfection.

Eliminate soil and eliminate germs. Grass ash and lime are both very good alkaline fertilizers.

Lime has a significant disinfection and sterilization effect, and is also rich in calcium, which has a wide range of uses in the production of edible fungi. 1.The application on the site is to remove weeds around the site, sprinkle a layer of lime powder, then clean the culture room, spray conventional insecticides, and sprinkle another layer of lime powder.

This can kill some miscellaneous bacteria, reduce the pollution base, especially bacterial pollution, and also prevent slugs and other pests from invading the site. 2.Application in culture materialsMost edible fungi can grow normally in slightly alkaline culture materials, except for acid-loving edible fungi such as Hericium erinaceus.

Adding 1% and 2% lime to the culture material can basically control the bacterial contamination in the raw material cultivation. Practice has proved that when cultivating oyster mushrooms in raw materials, the contamination rate of miscellaneous mushrooms is less than 2% with 2% with 2% and 20% with no lime for the latter. Because the material without lime is acidic after composting and fermentation, the pH value is generally below 5 6, which is suitable for the growth of various miscellaneous bacteria, and is easy to cause explosive pollution of miscellaneous bacteria.

The culture material added to lime is alkaline, and the pH value can be maintained at about 8 after fermentation, and it is difficult for miscellaneous bacteria to grow, so as to achieve the purpose of controlling miscellaneous bacteria. In addition, because lime contains a large amount of calcium, the mycelium is thick and white after use, and at the same time, it can also enhance the firmness of the fungus and improve the yield. 3.

The application in rodent control and insect control due to the special fragrance of mycelium, mice like to bite very much, if the use of lime on the basis of drug rodent control, it has the effect of twice the result with half the effort. A layer of lime powder can be spread at the entrance and exit of the germ room, and the rats will be afraid of inhaling the lime and will stop.

Quicklime itself has many functions, but if you see them acting in the field, there are basically only two situations:

1. Disinfection and sterilization.

Quicklime will produce a chemical reaction when it encounters water, and in this case, it will release a large amount of hot gas, which is a scene we often see. Therefore, by sprinkling quicklime in the field, and then watering it through the buried soil of the farmers, the heat will be excited by the hot gas, and the temperature of the soil will also be increased, which can quickly disinfect the soil environment. This is also for the sake of the problem of pests and diseases in the future planting of green plants, and there will naturally be fewer pests in a high temperature environment.

2. Improve soil properties.

We all know that as a chemical, quicklime absorbs water to produce calcium hydroxide, which is an alkaline substance. This alkaline substance can neutralize the acidity of the soil in the field, and in the process of sprinkling quicklime, it can also further increase the calcium ion content in the soil. If you have been exposed to chemistry friends, you should know that calcium ions can make the entire soil environment more loose and improve soil properties.

3. Increase soil microbial activity.

Sprinkling quicklime on farmland, in addition to the above two points we mentioned, can also increase the activity of soil microorganisms. As long as the microbial activity is improved, the nutrient content of the soil will naturally increase, which can promote planting.

And don't do it either.

Quicklime becomes mature lime when the temperature of water rises, and slaked lime will become hard calcium carbonate when it comes into contact with carbon dioxide, which will affect crops.

Question: I want to spread lime on the rice field now to get rid of the weeds. Wouldn't it be okay to wait until the end of this month to sow rice seeds?

Thank you for the reminder.

Question: Now that there are many weeds in my rice field, what is the best way to get rid of weeds?

Answer: 1) Establish a weed-free rice seed field. The multiplication unit must operate strictly in all aspects of land preparation, seedling raising, and field control. Seeds should be strictly inspected before being put into storage, and the seeds found to have weeds and rice should be scrapped and should not enter the seed market or be exchanged by themselves.

The seed management department should also conduct regular inspections and strictly control the different links of multiplication.

2) Insist on paddy fields ploughing and deep ploughing in autumn. Autumn ploughing is a comprehensive yield increase measure for paddy fields to mature soil, prevent and control diseases, insects and weeds, and reduce the harm of weeds and rice. It is not advisable to rotate tillage for many years, and it is necessary to turn at least 2 or 3 years after deep ploughing for a year, insist on the combination of turning and turning, and take turns.

3) Seedling nutrient soil and mulching soil are best taken from orchards or dry grain fields. If the soil is used in the field, it should be prepared by high-temperature fermentation to prevent weeds and rice seeds in the seedling soil.

4) Seal with chemicals before transplanting. Before transplanting, it can effectively control weeds with Nongsita, Fulong, etc., and the general effect is 65% 70%. However, when selecting drugs in various places, it is necessary to first test to determine the selection of pesticides, application amounts, safe application time, etc., which should not only be safe, but also play a role in preventing weeds and rice.

The application time should be 5 to 10 days before transplanting.

No. This will destroy the land.

<> quicklime disinfection soil application time and specific function.

Quicklime is used to disinfect the soil, and the specific methods include removing and digging ditches, applying quicklime according to the number of acres of land, soil pH value and special conditions, irrigating and watering thoroughly, and drying and preparing the land.

1. Dry field disinfection time.

1. Before spring sowing.

Quicklime disinfection is applied before spring sowing, mainly to kill the germs when sowing, so as to protect the unearthed seedlings from being infested by germs and pests. The appropriate disinfection time should be completed half a month before sowing, so as to avoid the impact of high soil alkalinity on seedlings.

Yihui Long quicklime.

2. After the crop is harvested.

There is no crop in the field after the crop is harvested, because the germs that breed in the crop production process enter the soil, it is normal to disinfect the soil with quicklime after harvest, and the disinfection of crops after harvest is mainly for better planting of the next batch of crops.

Second, the time of rice field disinfection.

In the cultivation of rice fields, quicklime disinfection is also accompanied by the whole breeding process. However, the direct contact between quicklime and the soil is when the pond is cleared, and the other is when the rice is harvested and the field is dried.

As long as it is a clear pond, of course, quicklime can be used at any time, and there is no time requirement. For shrimp paddy fields, it is necessary to sterilize and disinfect rice after harvesting. Generally, the rice is dried immediately after harvesting, and quicklime is sprinkled on the field, which can kill the bacteria in the field, and at the same time, it can also kill the moss spores.

Therefore, the disinfection of the field surface with quicklime in the shrimp rice field is carried out after the rice harvest.

Quicklime can be sown only after 3 days of sprinkling.