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How to Plant Jackfruit Seeds? A Detailed Guide to the Latest Planting Methods
Jackfruit originated in India and Southeast Asia, prefers a tropical climate, and thrives in frost-free areas with abundant annual rainfall. It was introduced to our country nearly a thousand years ago and is now mainly cultivated in Hainan, Guangxi, Guangdong, Taiwan, China and other parts of South China, and it has extremely high cultivation value
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Where are the latest mandarin orange production areas? A complete overview of the main production regions
The place of origin of the mandarin orange is China. Cultivation of mandarin oranges in our country has a history of more than 4000 years, mainly produced in the middle and lower reaches of the Yangtze River and areas south of the Yangtze River. A cultivation history of several thousand years certainly cannot pin down a specific location. Spread across the Eurasian continent by Arabs, the mandarin orange is still called the "Chinese apple" in the Netherlands
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Where is Shatian pomelo a specialty of? Let us take you through its place of origin
Shatian pomelo is the fruit of the pomelo, a plant of the genus Citrus in the family Rutaceae. It is usually divided into two major categories, sour pomelo and sweet pomelo, by the flavor of the flesh, or into two major categories, white-fleshed pomelo and red-fleshed pomelo, by the color of the flesh. It not only has high nutritional value, but also has benefits such as strengthening the stomach, moistening the lungs, nourishing the blood, clearing the intestines, and promoting bowel movements
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The Latest Winter Spinach Cultivation Techniques and Methods Tutorial
Spinach originated in Iran and was introduced to China from Nepal during the reign of Emperor Taizong of Tang. It is now one of the vegetables we commonly cultivate. Spinach can be divided by sowing time into spring spinach, summer spinach, autumn spinach and winter spinach. Winter spinach refers to spinach sown from mid-October to early November each year and harvested around the Spring Equinox of the following year.
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How to Grow Kyoho Grapes? A Detailed Explanation of the Latest Key Cultivation Techniques
Kyoho grapes originally came from Japan and were introduced to China in the 1990s. Kyoho grapes differ from other grapes in that they are relatively difficult to manage, because they have a very serious problem with flower drop and a low fruit-setting rate. However, they have high value; Kyoho grapes are full of
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How to Propagate Sapodilla? A Detailed Guide to the Latest Propagation Methods
Sapodilla was originally a tropical fruit from the Americas, and now there is also a certain cultivated area in tropical regions such as Guangdong and Yunnan in China. It gets its name because the fruit of the sapodilla looks very much like a human heart. The nutritional value of sapodilla is very high, so the planting
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Peach Fertilization: The Latest Technical Methods Tutorial
The peach originated in our country and is widely cultivated; its fruit is delicious and suitable for all ages. In addition, it is rich in carotene, making it a good way for children to supplement nutrition. There are many kinds of peaches, and different variety series are available in different periods. They can fully meet the market's year-round
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How to Propagate Walnuts? A Detailed Guide to the Latest Propagation Methods
Walnut is a nut that originated in China. The main propagation methods for growing walnuts are seed propagation, grafting propagation, and cutting propagation. Among them, cutting propagation is the fastest and easiest way to achieve survival. In addition, sowing must be done after artificial treatment, otherwise
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Where is the origin of dark plum? A list of the latest main producing areas
Dark plum is the fruit of a plant in the apricot genus, commonly processed into preserved fruit for eating, and the fruit can also be eaten fresh, but in fact many people do not know that dark plum is a traditional Chinese medicine. Its planting range is relatively wide, but it is mostly grown in the southern regions. But where are the main producing areas? Xu
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Are stink bugs beneficial insects or pests? Uncovering the origin of the name "stink ladybug"
Stink bugs, about the size of a woman's fingernail, uniformly dark brown, are called stink bugs, fart bugs, poop bugs, or "stink ladybugs" because they release a foul odor. So are they beneficial insects or pests? According to agricultural records, stink bugs are a general term for a class of insects with abnormally variable wings, with over 30,000 species, of which more than 90% are pests. However, insects also have a beneficial side. Beneficial species include predatory stink bugs that feed on small insects and benefit agriculture, the medicinal jiuxiang bug, the edible guihua cicada, and the field giant water bug and pine algae bug that specifically prey on juvenile fish and harm the aquaculture industry. <p style="text-align: center;"><span style="line-height:1.6; text-indent:2em"></span></p> <p style="text-indent:2em;">Most stink bug species are pests. In the cotton region of the Yellow River basin, 3-5 generations occur each year, overwintering as eggs in dead branches and stubble of alfalfa, broad bean, pomegranate, apple, etc., as well as in dead cotton branches and boll shells. They hatch in early to mid-April and emerge as adults in late April. Mid-June to mid-July is the peak damage period. Adults are phototactic, lay more eggs in densely growing cotton fields, and prefer high temperatures and rain. Temperatures of 25°C-30°C and relative humidity above 80% are suitable for egg hatching and reproduction, and cotton fields near alfalfa plots, green manure fields, or with many weeds suffer the most severe damage.</p> <p style="text-indent:2em;">In the suburbs of Beijing, stink ladybugs mainly harm fruit trees such as pear, peach, and apple, with damage rates generally around 15% to 25%, and fruit damage rates as high as over 70%, turning the fruit into “monkey-head peaches” and “pear lumps” that taste bitter and lose their food value. In urban areas, stink ladybugs harm various landscaping trees and flowers such as willow, elm, mulberry, poplar, pagoda tree, eucommia, paulownia, and pomegranate. They suck the sap of flower buds, petals, leaves, tender leaves, and fruits, greatly reducing the effectiveness of landscaping and beautification.</p> <p style="text-indent:2em;">To control stink ladybugs, you can concentrate on trapping and killing them when they overwinter; in early spring, take measures such as plugging tree holes and scraping off old bark; at noon in summer, gently shake the tree trunk by hand and promptly kill the stink ladybugs after they fall to the ground; in addition, control should be carried out during the nymph stage of stink ladybugs, because during this period they can only crawl and cannot fly. At present, the use of the stink bug's natural enemy, the stink bug egg parasite wasp, for biological control of stink ladybugs at the forestry biological control center has entered the experimental stage. Field surveys show that the stink bug egg parasite wasp has a high parasitism rate on stink bug eggs, with an average parasitism rate of 47.22% on tea-winged stink bug eggs and 30.56% on pear stink bug eggs, making it a natural nemesis of stink ladybugs.</p> <p style="text-indent:2em;">The rice stink bug egg parasite wasp parasitizes rice brown stink bug eggs, singly. In a July 1957 survey of rice fields in Hangzhou, Zhejiang, up to 97.1% of rice brown stink bug eggs were parasitized by black egg wasps, of which this species accounted for 94.2% and the rice stink bug small black egg wasp for 2.9%. The sex ratio of this species was 81.54%. According to another survey in Wangcheng, Hunan, of the 67.24% parasitism rate of rice brown stink bug eggs, this species accounted for 41.75% (Zhou Renlian, 1955). Parasitized eggs appear black before emergence and light yellow after emergence. The emergence hole is on the top surface of the egg, irregularly circular, with an uneven cut edge and strip-like debris connected to the rim of the hole. Creamy egg contents remain on both sides inside the egg. Adult wasps mate immediately after emergence, and the time is extremely short, only 3-5 seconds. When laying eggs, they constantly use their antennae to explore above and to the sides of the egg, and always insert eggs from the side. Laying one egg takes about 30 seconds; after laying, they move slightly and then lay eggs on another host. When reared by introducing fresh stink bug eggs, the period from egg laying to emergence is 7 days, with an average of 22 offspring wasps. Adult wasps live 4 days, and if supplied with diluted honey solution, this can be extended to 20-22 days.</p>
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