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What is the difference between Panax notoginseng and Gynura segetum? This article teaches you to tell them apart
Also known as red-backed sanqi, soil sanqi, and blood-breaking elixir. The source is the root of the Asteraceae plant Gynura segetum (Lour.) Merr. Plant morphology: perennial herb, 1-1.5 m tall. Stem erect, somewhat succulent, with fine longitudinal ridges. Basal leaves clustered, spoon-shaped, entire or serrate or pinnately divided, purple-green beneath; cauline leaves alternate, oblong, 10-25 cm long, 5-10 cm wide, pinnately divided, lobes ovate to lanceolate, margin shallowly
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Key Points of Water Management at Different Growth Stages of Rice
Rice has relatively strict requirements for water conditions, and the water demand varies at different growth stages. To ensure stable and high yields of rice, scientific water management should be carried out according to the different growth stages. 1. Shallow water and frequent irrigation at the tillering stage. Shallow water and frequent irrigation at the tillering stage allows good light penetration to the base of the rice plants, so that sunlight can shine directly on the stems of the rice plants, raising the water temperature and soil temperature, increasing oxygen in the soil, promoting root development, improving fertilizer uptake capacity, promoting early tillering, and increasing the rate of tillers forming panicles. The depth of irrigation water should be based on weather conditions, generally 3-5 cm, and a shallow water layer should be used on cloudy and rainy days. High
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Detailed Explanation of Nutrient Uptake Patterns of Rice at Different Growth Stages
The nutrient uptake of rice at various growth stages differs considerably depending on the type. Double-season rice has a short growth period, especially the shortened vegetative growth period in the field, so vegetative growth and reproductive growth overlap shortly after transplanting. That is, tillering in the field begins at the same time as panicle differentiation, and the peak tillering stage occurs during panicle differentiation, thus forming a prominent nutrient uptake peak 2 to 3 weeks after transplanting; single-season rice forms two nutrient uptake peaks 2 to 3 weeks and 7 to 9 weeks after transplanting. The uptake rates of various nutrients by rice all reach
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What is the difference between water pinellia and dry pinellia?
Dry pinellia and water pinellia are both pinellia, and the two are mainly distinguished by the shape of the tuber. The tuber of dry pinellia is spherical or oblate, 0.5-4 cm in diameter, with the bottom and lower half pale yellow, and the bottom or side of the tuber has a "scar" occupying one-third or one-fifth of the tuber surface. Water pinellia has a pointed bottom, shaped like an arrowhead, so water pinellia is also called "arrowhead". Dry pinellia is a "sphere" and water pinellia is a "cone", so the shapes are very easy to distinguish.
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How do the immunization methods differ for different types of pigs?
Immunization of replacement gilts. Replacement gilts should be vaccinated with the following vaccines 1 month before mating, and sows after weaning should be vaccinated as follows: (1) Swine fever vaccine, 4 doses per head. (2) Swine erysipelas and swine pasteurellosis combined vaccine, 1 dose per head. (3) Swine Japanese encephalitis vaccine, 1 dose per head. (4) Porcine parvovirus vaccine, 1 dose per head (the inactivated vaccine can be given twice, with an interval of 15 days). (5) Swine pseudorabies vaccine, used according to the instructions. Immunization of farrowing pigs. Farrowing sows should be vaccinated with the following vaccines 15-40 days before farrowing: (1) Piglet Escherichia coli quadruple vaccine (K88, K99, 9
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Disease Occurrence and Prevention Methods for Pigs at Different Feeding Stages
Disease occurrence in pigs at different feeding stages. The incidence of the three major infectious diseases of pigs. Swine fever, swine erysipelas and swine pasteurellosis are collectively known as the three major infectious diseases of pigs. In our country, the total mortality rate of affected pigs accounts for about 8% of the total raised population, and in areas with better prevention and control the pig mortality rate is also 5%. Therefore, the level of pig disease prevention and control should be raised. If the total pig mortality rate could be reduced by one percentage point each year, that would be equivalent to an additional 5 million pigs sent to market - what a huge fortune that would be. According to relevant statistics,
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What is the difference between Solomon's seal (Yuzhu) and Siberian Solomon's seal (Huangjing)? A quick guide to tell the two apart
Yuzhu is the dried rhizome of Polygonatum odoratum, a perennial herb of the genus Polygonatum in the Liliaceae family. It was first recorded in the Shennong Bencao Jing, where it was listed as a top-grade drug under the original name Nülou. The Mingyi Bielu calls it Weirui, and in Hunan it is also called Weishen. Huangjing was first recorded in the Mingyi Bielu and listed as a top-grade drug. There are many botanical sources; broadly speaking, the commercial drug can be divided into two types: chicken-head Huangjing and ginger-shaped Huangjing. Chicken-head Huangjing is the dried rhizome of Polygonatum sibiricum, a few Polygonatum macropodum, and Polygonatum stenophyllum, all perennial herbs of the genus Polygonatum in the Liliaceae family; ginger-shaped Huangjing is the dried rhizome of Polygonatum kingianum, Polygonatum cyrtonema, and Polygonatum cirrhifolium, all perennial herbs of the genus Polygonatum in the Liliaceae family.
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Rose cultivation should be carried out according to differentiated needs
Different people appreciate roses from different angles, and different rose varieties may have different uses. Therefore, rose producers need to be good at discovering these situations and actively explore cultivation methods for different rose varieties to respond to ever-changing market demands. Overall, roses have certain weaknesses
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How many years does it take for German iris to bloom? A detailed explanation of the differences from iris
German iris, this is also a kind of plant, it really looks beautiful when it grows, and the flowers it produces are blue. So how many years does it take for German iris to bloom? And the differences from iris: How many years does it take for German iris to bloom: German iris generally blooms in the second year after planting. It blooms in April and May.
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Solutions for Mandevilla Losing Leaves and How It Differs from Double Happiness Vine
There is also a plant in daily life called Double Happiness Vine, and the two look very similar in appearance. What should you do when Mandevilla loses leaves? And how does it differ from Double Happiness Vine: 1. Lack of water: when the water shortage is severe, leaf drop will occur, but before the leaves fall, their edges will gradually turn yellow
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