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The Harm and Control Methods of Angelica Leaf Spot Disease
The pathogen of Angelica leaf spot disease (Septoria SP.) is a fungus of the genus Septoria in the subphylum Deuteromycotina. The pycnidia are round, and the conidia are filiform to needle-shaped, colorless and transparent, straight or slightly curved, mostly with slightly pointed tips, with 1-3 septa. 1. Harmful symptoms: it damages the leaves. In the early stage of the disease, brown spots appear on the leaf surface, and the lesions gradually expand, with a chlorotic halo appearing around them, the edges appearing reddish-brown, and the center grayish-white. In the later stage, small black particles appear within the lesions. When the disease is severe, most of the leaf becomes reddish-brown, and finally gradually withers
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The Poetic Charm and Ornamental Beauty of Tulips
Dear expression. The tulip has a tall, upright stem and full, beautiful blooms. In Western literature and painting, the tulip is a symbol of victory and beauty. The Netherlands is the main exporter of tulips, and the tulip is also its national flower. There are extremely many tulip varieties, with nearly 8,000 varieties at present. The colors range from white, yellow, pink, red, deep red, and rose red all the way to black tulips. This wondrous plant, named tulip, comes from distant lands, and its preciousness is swiftly sought.
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Is Paphiopedilum suitable for indoor growing, and is it harmful to the human body?
Paphiopedilum, also a type of plant, is one that many people like, and it looks really beautiful. So is Paphiopedilum suitable for indoor growing? Is it harmful to the human body: Is Paphiopedilum suitable for indoor growing: Paphiopedilum is a terrestrial plant; wild Paphiopedilum grows on rocks and trees, the plant is short, and it is extremely suitable for potting.
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The three Chinese zodiac signs that get rich through business, each of them charmingly versatile with a quick mind
The three Chinese zodiac signs that can get rich through business, charmingly versatile with a quick mind
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Fusarium toxins harm both wheat and human health
Fusarium head blight toxins damage wheat and harm people
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New breakthrough made in research on tobacco harm reduction and tar reduction technology
New breakthrough made in research on tobacco harm reduction and tar reduction
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Rumors harm farmers: how can we eradicate the soil in which they breed?
What will it take to eradicate the soil that lets rumors harm farmers?
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How to Avoid Harming Farmers' Interests in Land Transfer
Guard Against Harm to Farmers' Interests in Land Transfer
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Harmless treatment of dead livestock and poultry turns them into sought-after organic fertilizer
Turning dead livestock and poultry into sought-after organic fertilizer
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The development of agritourism should showcase the unique charm of the countryside
"Agritourism" should showcase rural charm
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