How to select and prepare the seedling field of Panax notoginseng
Select the shady slope on the back, the slope is about 5 °~ 10 °, the soil drainage is good, the texture is loose, the red soil or brown red soil with aggregate structure is suitable, the pH is 5.5-7.0. the moderately acidic soil is suitable, while the heavy clay soil is easy to cause root rot, so it is not suitable to choose.
The soil was ploughed many times 2-3 months before sowing, with a depth of 30 cm to make the soil weathered, while weeds, roots and stones were thoroughly removed, and combined with ploughing, 25 g / m2 of lime 75 kg or 50% carbendazim wettable powder per mu was applied for soil disinfection treatment. Do not prepare the ground on rainy days or after rain.
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How to survive the winter in the seedling field of Panax notoginseng
Panax notoginseng is a perennial herbaceous plant. In winter, all the aboveground parts die. At this time, the aboveground part should be cut off at 3 cm on the ground, and all litter, leaves and weeds in the garden should be removed and burned outside the garden. The soil was thoroughly sprayed and disinfected with 0.2-0.3 Baomeidu stone-sulfur mixture, and then a layer of rotten stable fertilizer was applied, about 1500 kg per mu, to keep warm and prevent freezing. If root exposure is found, the soil should be cultivated when applying winter fertilizer, and finally covered with a layer of grass to ensure the bud head to survive the winter safely.
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Morphological characteristics of Panax notoginseng
Panax notoginseng is a perennial herb with a height of 30cm to 60cm. The main root is fleshy, mostly short conical. The rhizome is short and thick, commonly known as "sheep's intestines". Aboveground stems erect, smooth, glabrous, solitary, unbranched, longitudinally striated. Palmately compound leaves 3-6 whorled stem apical, long stalked; leaflets 3-7, long elliptic to Obovate, 5-15 cm long, margin serrulate, bristles on both sides of veins. Umbels solitary at the top of the stem, flowers numerous, bisexual, yellowish green at first blooming, white when in full bloom; calyx and Corolla 5 each
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