-
Compilation of China's climate regionalization for the past 30 years completed, impacts of shifts in climate patterns emerge
Recently, the public welfare industry (meteorological) scientific research special project "Compilation of China's Climate Atlas and Climate Regionalization Research for the Most Recent 30 Years" passed acceptance. Focusing on the urgent need for a new type of climate regionalization in China's climate research and operational work, and addressing the changes that have occurred in China's regional climate distribution pattern against the background of climate change,
-
Four major changes in China's agricultural layout and production patterns
"Huguang ripe, the world fed," "grain transported from south to north," "facing the yellow earth with back to the sky" - these traditional impressions of grain production are now undergoing earth-shaking changes. First, grain-producing areas are rapidly shifting northward. The middle and lower reaches of the Yangtze River are a traditional grain-producing region, long known for the saying "Huguang ripe, t
-
What is the special-effect pesticide for watermelon bacterial leaf blight? Detailed explanation of symptoms and disease patterns
Abstract Special-effect pesticides for watermelon bacterial leaf blight: chlorothalonil wettable powder, procymidone wettable powder, mancozeb wettable powder. Main symptoms of watermelon bacterial leaf blight: first, obvious water-soaked small spots appear on the leaf margin on the underside of the leaf, or between the veins,
-
Occurrence Patterns and Control Methods of the Citrus Whitefly
The citrus whitefly, Dialeurodes citri (Ashmead), also known as the citrus whitefly, Tongcao whitefly, and orange-yellow whitefly. In recent years, damage in citrus orchards across the counties (districts) of northwestern Fujian has been extremely severe, spreading from localized outbreaks to contiguous occurrence, with a worsening trend. Adults and nymphs suck plant sap
-
How to prevent and control spring soybean virus disease? Detailed explanation of occurrence patterns and control methods
Viral disease is a major disease of spring soybean, causing about 15% yield loss in normal outbreak years and over 50% yield loss in severe outbreak years. 1 Symptoms After spring soybean is infected, the upper leaves first show light yellow-green mottling, and the mesophyll bulges in a blister-like manner along the veins; then the mottling and wrinkling become increasingly severe, the leaves become deformed, the mesophyll protrudes, the leaf margins curl downward, plant growth is clearly stunted, the number of pods decreases, the pods are small and slender, and the pods show deformed symptoms such as flattening and bending. After infected spring soybean matures, the seeds are clearly smaller, and light brown streaks can appear on the seeds.
-
Occurrence patterns and control methods of soybean sclerotinia stem rot
Soybean sclerotinia stem rot occurs commonly in Heilongjiang Province. In 2001, the disease was relatively severe in Raohe County. In continuous soybean cropping fields, the disease incidence rate was 3%-30%, and in individual fields following American sunflower, the incidence rate reached 50%. In severely affected fields, the crop was even completely lost. 1 Causes of the disease 1.1 Climatic conditions In mid-to-late July, continuous low temperature and scant sunshine
-
Occurrence Patterns and Control Methods of Peanut Spider Mites
Peanut spider mites occur commonly in Zhaoyuan City, mainly the carmine spider mite (Tetranychus cinnabarinus) and the two-spotted spider mite (Tetranychus urticae), among which the carmine spider mite has the highest occurrence density and causes the most severe damage, while the two-spotted spider mite affects a smaller area, but in recent years the two-spotted spider mite has shown an upward trend in Zhaoyuan City. In recent years, peanut spider mites
-
Occurrence Patterns and Control Methods of the Sweet Potato Hornworm
The sweet potato hornworm, Herse convolvuli (Linnaeus), belongs to the order Lepidoptera, family Sphingidae. It is distributed in Japan, and in China it is also found in Liaoning, Hebei, Henan, Shandong, Shanxi, Zhejiang, Taiwan, China, Guangdong and other provinces. It mainly damages plants of the Convolvulaceae, Solanaceae and Fabaceae. I. Morphology
-
What are the behavioral patterns of wild boars and the methods for hunting them?
Abstract. Behavioral patterns of wild boars: they prefer to forage in the morning or at dusk, retreat into dense forests at noon to avoid sunlight, and are mostly social animals, with groups of 4-10 being relatively common; their range of activity is 8-12 square kilometers, and they spend most of their time in familiar areas. Night
-
How Many Times a Year Does a Bamboo Partridge Breed? A Detailed Explanation of Bamboo Partridge Breeding Patterns
Abstract Wild bamboo partridges breed once a year, laying 7-12 eggs each time. Artificially raised bamboo partridges breed once in the first year, with a clutch of only 5 eggs; in the second year most bamboo partridges still breed once, while a small number breed twice. Around March each year, bamboo partridges enter the bree
条件筛选