202 1 Matters needing attention in summer sericulture

202 1 what are the precautions for raising silkworms in summer? Summer is the first 14 of the 24 solar terms. The node time is around August 23rd in Gregorian calendar, and the sun arrives at 150. The arrival of the hot summer also means entering the second half of the dry calendar. Let's take a look at the precautions of sericulture in 20021summer. Welcome to check!

Matters needing attention in sericulture in summer

First, we must do a good job of "three defenses"

1. Pest control. Pay attention to thorough disinfection before sericulture. 3 ~ 5 days before sericulture, the silkworm room, silkworm tools and the surrounding environment should be thoroughly cleaned and cleaned. Specific method: spray with 1% bleaching powder aqueous solution twice continuously, and keep it moist for half an hour each time. Silkworm plaques and nets should be washed and dried more, and ants should collect them. Silkworms should be disinfected with nets. After desanding, bleach solution containing 1% available chlorine should be used for ground and space spray disinfection. In order to prevent silkworm disease, chloramphenicol aqueous solution was added once a day at noon from the age of three. When pesticide poisoning of silkworm children is found, it should be immediately soaked in 1% edible alkaline water for detoxification. In order to prevent the harm of fly maggots, silkworm fly-killing tablets should be added on time and in quantity from the third age.

2. Resist sweltering heat. Silkworm room should choose a cool and ventilated house, and the silkworm plaque should not directly face the doors and windows of the silkworm room, let alone be blown directly by a fan. The best way is to install an exhaust fan, cover the house with a straw curtain and spray water around the brick wall to reduce the heat.

3. prevent hungry silkworms. The continuity of rearing is directly related to the continuous growth of silkworms, so silkworms should not be allowed to starve. The leaves of young silkworms are slightly larger, and the 3rd instar silkworms can feed the whole leaves. Feed less times, 6 times a day, feed the big silkworm after eating, and feed more when it is cold at night.

Second, the three "early" is urgent.

1. Early harvest of ants. The hatched ants should be swept down with a feather broom and moved to the silkworm nest in time, otherwise it will cause losses if they are scattered around for a long time, and they should be collected at least twice a day, usually at 5 o'clock and 7 o'clock. Feeding in batches with harvest.

2. Eat early. When 80% silkworms molt, they can be eaten at the expense of food. Mulberry leaves fed at the expense of food must be fresh and gradually increased from less to avoid being hurt by overeating.

3. Expand the seats early. The hot wild silkworm grows fast, so it is necessary to expand its seat and release it as soon as possible. We can't wait until there are more people to expand the seats, which will affect the normal growth of silkworms. 、

Silkworm rearing in summer and autumn will be more than half successful as long as these links are well grasped.

Three or four, be careful not to neglect.

1. Silkworms should learn from his experience and stop raising silkworms in the future. When the silkworm closes its eyes, it should be fed with cut leaves, fed less and full.

2. Diligent in sand removal. 1-2 years old, needs to start and sleep.

3. From the age of three, clear the sand once a day to keep it clean and create a good environment for silkworms.

4. Pay attention to prevent silkworm loss when removing sand.

Beginning of autumn is in summer.

Although it is generally believed that the high temperature weather after beginning of autumn is "autumn tiger". But some people have put forward different views.

1. The autumn tiger should be the summer tiger: after beginning of autumn, that is, the autumn tiger in the first half of August should be the summer tiger. According to the criterion that the average daily temperature is less than or equal to 22℃ ≥10℃ for five consecutive days, many areas in North China, Jianghuai, the middle and lower reaches of the Yangtze River, Jiangnan and South China are still in midsummer before summer (August 22nd and 23rd). There is a proverb that "beginning of autumn will be hot", and the autumn solar term begins at10. The hot weather at this time is normal. It should be very hot in summer. The tiger at this time should be the summer tiger. It's too early to mention autumn tiger.

2. Autumn tiger refers to the weather that is cool first and then hot: according to the dictionary of atmospheric science; Autumn tiger is a common name for the short-term hot weather that reappears after the beginning of autumn. The key point here is that after the weather turns cold, the short-term hot weather reappears, which is called autumn tiger. Indeed, after the summer heat on August 22 or 23 every year, the summer heat tends to weaken, and sooner or later you will feel the news of autumn. Referring to the reasons for the formation of the autumn tiger, the Dictionary of Atmospheric Science mentioned: "The subtropical high once again controlled the Jianghuai Basin, and the temperature rose, forming sultry weather." It can be seen that the weather is getting colder after the intense heat in the south, but it is not as obvious as in the north. The dictionary of atmospheric science further points out that autumn tigers generally occur after the turn of August and September, and last for about a week, half a month or even longer. It has been hot in beginning of autumn for many years, and it is still hot in summer, so there is a saying that "summer is big, summer is small, summer is not, and beginning of autumn is in summer". This kind of hot summer and autumn situation appears, and the "autumn tiger" attracts people's attention, and it is more necessary to remind them to prevent heatstroke and cool down. I haven't seen a unified quantitative standard about autumn tiger weather. According to experts from Beijing Meteorological Observatory, the highest temperature in autumn tigers is generally above 33℃ and lasts for several days.

How to exercise in summer?

1, proper heating and food supplement: in midsummer, early autumn is cool and dry, and there is still dampness. Red dates, red beans, lotus seeds and black beans can all be used to make soup, porridge or stuffy rice. Usually, you may wish to use traditional Chinese medicines such as lotus seeds, Euryale ferox and yam to make soup or porridge.

2, appropriate vitamin supplements: eat more foods containing vitamins such as tomatoes, peppers, eggplant, potatoes and so on. It can supplement human nutrition and avoid being hurt by dryness. Eat more alkaline foods, such as apples, kelp and fresh vegetables. Moisture-rich ingredients are recommended in autumn.

3. Appropriate intake of protein: Autumn is a special period for increasing fluid and nourishing body fluid, so a proper amount of protein can improve immunity. You can eat more foods with high alkaline and protein content, such as eggs, lean meat, fish, dairy products and bean products.

4, appropriate hydration: the diet should be "moist." With a large number of fruits on the market, you might as well eat more fruits such as apples, peaches, pears, grapes and cantaloupes. , rich in water, can be used for nourishing the body, moistening dryness, clearing away heat and relaxing bowels.

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