We all know that crops need to know some intercropping techniques in order to increase production, while also using the biological habits between crops to prevent pests and diseases and provide necessary nutrients. But if there is no such complementary habit between the crops, but it is to restrain another crop growth, then it will not work. Therefore, there is a saying that "crops find good partners, prevent disease and control insects and increase production." The following is mainly to introduce to you which crops can not be planted together and crops should be planted.
There is a habit of “mutually benefiting each other†and “different from each other†between crops and crops. The so-called "mutually beneficial" means that the two crops are interplanted together and promote each other. For example, between corn and soybeans, soybeans give their own nitrogen fertilizer to corn, and corn retaliates with carbohydrates as soybean root nodules. Provide nutrients; the so-called "different gram" is the combination of two kinds of crops that will inhibit each other's growth and development, such as planting tomatoes and cucumbers together, the tomatoes will emit a special odor that inhibits the growth of cucumbers, so that The cucumber gradually became soft and yellow, until it withered and died.
For the relationship between “pro†and “sparse†between crops, people with rich experience in interplanting have summed up a set of jingles, such as “Pear cypress is a family, and must be on a business tripâ€, “The grass is silent but There is love, the crops also have relatives and friends, and also include the following: "Apple meets walnuts, fat pigs touch steel knives." These proverbs, if not the old driver of the land, may not have heard of it, have you heard of it?
The so-called "Apple encounters walnuts, fat pigs touch steel knives", may be explained by the above, everyone must think that apples and walnuts can not be planted together, if planted together, that is, big fat pigs encounter killing knives, It must be dead. What is going on? This is because the walnut secretions of walnuts can cause damage to apple roots and inhibit apple growth, so there is a saying that "Apple meets walnuts, fat pigs touch steel knives."
From the perspective of this kind of mutual benefit and mutual benefit between crops, we must fully grasp the intercropping or intercropping techniques. Under normal circumstances, we need to pay attention to the following three points:
A. When selecting intercropping and intercropping combinations, in addition to the special characteristics of sunlight, water, and nutrient utilization between them, it is necessary to pay attention to the interaction between secretions between the intercropping. For example, the pine spores of pine trees will fall into the orchard in the spring and summer seasons, which will seriously damage the fruit trees. Especially the pear trees are most seriously damaged, which can cause yellow spots and bristles in leaves and fruits, and make the fruit deformed and reduce the yield and quality.
B pay attention to the reasonable switching of the front and rear. After the crop is harvested, there is a certain amount of residue, which is decomposed by microorganisms to promote or inhibit the growth of the crop. For example, the chemical substances secreted by cannabis, mustard, and flax roots have obvious inhibitory effects on post-production wheat.
C Note the effects of crop secretions on some insects and pathogens. For example, garlic and Chinese cabbage, cabbage and other cruciferous crops intercropping, garlic volatile substances can kill Chinese cabbage soft rot pathogens.
Specifically, those crops can be interplanted, and those that can't be planted? In fact, there are quite a few examples. Here are a few examples:
Crops that should be intercropped or intercropped:
1. Loofah and eggplant intercropping. Protects eggplant from red spiders.
2, onion, garlic and fruit, beans intercropping. It has the effect of expelling mites.
3. Intercropping of garlic and cotton. Can expel cotton mites and other pests.
4, round onions and peas intercropping. The secretion of the onion can kill the black spot disease in a few minutes.
5. Lettuce and cabbage intercropping. Cabbage is susceptible to the damage of cabbage caterpillars, while lettuce can exude an irritating bitter taste. The cabbage caterpillar butterfly does not dare to approach the cabbage to lay eggs when it smells bitter.
6, garlic and Chinese cabbage, cabbage intercropping. Cross-flowered bare plants such as Chinese cabbage and cabbage are susceptible to bacterial soft fungus rot, while garlic plants can secrete allicin, which has a strong bactericidal effect on soft rot bacteria, and the garlic is intercropped and interplanted together. By killing a large number of germs, the disease can naturally be suppressed.
7, soybean and corn, wheat intercropping. Both can increase production, because soybean rhizobium can fix nitrogen in the air, while wheat and corn root secretions contain a lot of carbohydrates, and the advantages of both sides are used to supplement each other. Soybeans supply corn and wheat. Nitrogen, corn, and wheat return soybean sugar, so it can achieve the effect of increasing production and increasing income.
Crops that are not suitable for intercropping or intercropping:
1. Sugar cane and corn. Both are high-bar crops, and both sides are eager to compete for light.
2, cucumbers and tomatoes. The secretions of the two have the effect of inhibiting each other's growth. In addition, they are highly vulnerable to aphids. Once a locust occurs on one side, the other will soon be attacked.
3, grape and cypress, mustard and cabbage, sorghum and sesame, pumpkin and potato crops are mutually exclusive and difficult to get along with, must be isolated and planted, each other can grow normally.
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According to the rubber raw material or manufacturing process, it is divided into Latex Gloves and molded gloves.
Acid and alkali resistant gloves should be able to be used in sulfuric acid (density 1.32) or caustic soda solution (density 1.19) at 45°C. Electrical insulating gloves are divided into two types: high voltage and low voltage. High voltage can be used below 6000 volts (test voltage is 12000 volts). Low voltage can be used below 1000 volts. Medical gloves are divided into two types: light surface and wool surface (hair surface gloves or wrinkled gloves).
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Among them, plastic film gloves are generally used in non-professional occasions. The advantage is that they are cheap, but because plastic disposable gloves are not elastic, their durability and suitability are relatively poor;
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