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Forecast for the occurrence trend of the first generation of the striped stem borer in rice is released
1. Occurrence level: The first generation of the striped stem borer, the main rice pest in our city, is expected to occur at a moderate-to-severe level, with the affected area in the city reaching more than 250,000 mu, of which more than 50,000 mu are early-planted idle fields. 2. Occurrence period: Moths seen under light on April 11, the beginning of the peak moth emergence period 5/9-12, the peak moth emergence period 5/20-24; the peak egg hatching period 5/27-5/30, the peak period of first and second instar larvae 6/4-6/10, the occurrence period is 3 days later than the average of the past three years. 3. Forecast basis 1. Development progress: This year 4/2
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The correct method for broadcasting compound fertilizer during the rice stem elongation stage
During the rice stem elongation stage, topdressing is generally carried out 1 to 2 times. In previous years we used urea, but this year we switched to a high-tower granulated fertilizer. This is a compound fertilizer with high nitrogen and low phosphorus and potassium. The fertilizer granules are round and smooth on the outside, with holes inside, and have a relatively low specific gravity. Before fertilizing, we first drained the flooded water, then broadcast the compound fertilizer granules on the soil surface, and immediately let water back into the field. After the water layer was full, we found that some fertilizer granules appeared on the water surface. These floating granules were blown to one side by the wind, and some stayed in the sheltered corners.
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What causes blind stems and blind flowers in tulips?
Tulips are perennial bulbous herbaceous plants of the genus Tulipa in the lily family. They have an upright stature and large, colorful flowers, with high ornamental value. However, if not properly cared for, tulips are prone to blind stems and blind flowers. The symptoms of blind flowers are as follows: the branches and leaves develop normally; in weak-growing plants, the flower buds dehydrate and appear white, pointed like a leaf tip, and the flower stem shrinks; in strong-growing plants, the flower stem is short, the petals remain green or white, and they curl together with the stamens and pistils, unable to open fully. Blind stems mean that the aboveground part of the plant produces only one oversized leaf, with no leafy branches
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Why are the tulip stems short and the flowers small?
For tulips grown at home, the quality is not as good as those sold at flower markets, usually shown as short stems and small flowers. The main reasons: first, varieties with different genetic backgrounds differ greatly in flower stem length and flower diameter; second, 2 to 3 consecutive years of cultivation causes variety degeneration, because the cultivation environment differs greatly from the ecological conditions of the tulip's place of origin, especially factors such as excessively high summer temperatures and unreasonable fertilization during the growing period, which easily cause bulb degeneration; generally, commercial bulbs can only be planted for 1 to 2 years without corresponding rejuvenation measures; third, bulb storage
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Detailed Explanation of High-Yield Cultivation Technology for Agaricus bisporus in Mushroom House Shelf System
For several years, the author has been exploring high-yield cultivation technology for Agaricus bisporus (button mushroom) in mushroom house shelf systems and has gained some successful experience. The relevant techniques are summarized below for reference by peers. 1 Mushroom house and shelf structure The mushroom house is 19.6 m long from east to west, 9 m wide from north to south, with front and rear walls 2.5 m high and gable walls 3.5 m high. The walls are built with bricks and lime mortar. The outside is pointed with cement; the inside is first coated with lime mortar and then brushed with lime mortar. The front and rear walls have 4 ventilation windows of 25 cm x 20 cm each, arranged in upper and lower rows facing the aisle, with the first ventilation window 20 cm above the ground. The front
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Control methods for stem-boring pests damaging cherry blossoms
The stem-boring pests that damage cherry blossoms include longhorn beetles and the coffee wood moth (Zeuzera coffeeae). Their control methods are: 1. Longhorn beetles. The longhorn beetles that damage cherry blossoms usually include the citrus longhorn beetle (Anoplophora chinensis), the glossy green longhorn beetle (Anoplophora glabripennis), and the peach red-necked longhorn beetle (Aromia bungii). ① Citrus longhorn beetle. One generation occurs per year. When adults emerge from late May to early June, capture the adults: before laying eggs, the citrus longhorn beetle adult first bites a notch about 2 mm deep and about 8 mm long in the bark in the shape of the Chinese character "eight" or "ding", then lays eggs inside it. During the peak egg-laying period in mid-to-late July, search for the notches on the trunk and crush the eggs.
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Enema Therapy for Treating Digestive System Diseases in Dogs
In pet diagnosis and treatment, the most commonly encountered condition is digestive system disease in dogs. Applying a simple enema method according to the condition can achieve good results. Scope of application of enema therapy: (1) When a dog shows symptoms of gastroenteritis such as vomiting and diarrhea, and feces that are bloody and foul-smelling, enema therapy can be used for treatment, removing loose feces, emptying the intestines, and administering drugs directly via the rectum. (2) When a dog has fecal impaction such as dry stool and difficulty defecating, enema therapy can be used to soften the feces and lubricate the intestines.
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Symptoms and Control Methods of Black Stem Rot in Geraniums
Black stem rot of geranium is a disease that occurs on the stems of geraniums, causing the stems to rot and even the whole plant to wither and die. Symptoms: The disease occurs on both cuttings and mature plants. Infected cuttings begin to rot from the base of the stem, and the rot gradually spreads upward, eventually leading to death. After mature plants are infected, the diseased part turns black and rots, gradually spreading upward, and eventually the leaves fall off. In severe cases, the diseased part girdles the stem, causing the plant to die. Pathogen: The pathogen is Pythium splendens
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Analysis of the Occurrence of Canine Distemper and Preventive Measures
Canine distemper is a highly contagious infectious disease caused by the canine distemper virus, a member of the genus Morbillivirus in the family Paramyxoviridae. We analyzed a total of 55 cases of canine distemper and suspected cases diagnosed and treated from February to April 2003. The occurrence patterns were diverse and rather complex. They are reported below for reference. 1. Occurrence of canine distemper. 1.1 Causes of the disease. There are many and rather complex causes of this disease. According to the investigation, 22 cases (40%) developed the disease suddenly after being chilled from bathing
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Control Methods for Rhizoctonia Stem Rot of Carnation
It mainly attacks the root crown area of the plant, and infected plants dry up and die quickly. The pathogen infects the root crown of seedlings near the soil surface, initially causing brown or dark brown spots that gradually spread to the surrounding area. The base of the seedling rots and constricts, causing lodging. When older seedlings at the stem base are affected, the cortex near the soil surface rots and becomes slimy. The leaves of diseased plants turn pale white, wilt and droop, and finally the whole plant dies. Control methods: (1) Before cuttings are taken, flower pots and soil must be disinfected. (2) Plants should be grown on raised beds, and watering should be controlled so that the potting soil does not become too wet. (3) Disinfection
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