To ensure a successful potato cultivation, it is essential to choose high-quality varieties that promote rapid growth, high yield, and strong seedling development. Varieties such as Kexin No. 4 are recommended, and using virus-free seed potatoes can significantly improve plant health and productivity.
When selecting seed potatoes, it's important to pick from the spring harvest. Avoid any diseased, rotten, or damaged tubers, as well as those with irregular shapes. The ideal size for seed pieces is between 20 to 40 grams. In the fall, whole potatoes are typically used, with each piece weighing around 25 to 50 grams. A total of 150 to 200 kg per mu is recommended. To enhance sprouting, soak the seed potatoes in a solution of 1 gram of gibberellic acid in 120 to 180 liters of water during mid to late July for 15 to 20 minutes. Afterward, allow them to sprout naturally in a shaded area until the buds reach 1.5 to 2 cm in length before planting.
Planting in autumn should be done later in the season, ideally between August 8th and 15th, choosing days with no rain for sowing. Use shallow furrows about 8 to 10 cm deep, water them after planting, and then cover with soil to form small mounds, approximately 8 to 10 cm high. This helps improve drainage and promotes healthy root development.
Mulching is an effective technique for maintaining moisture and controlling weeds. Plant in a wide-narrow row pattern, applying base fertilizer during sowing. The large row spacing should be 70 to 75 cm, while the small rows are spaced 30 to 35 cm apart, with plants about 20 cm apart. Apply 30 to 40 kg of potassium sulfate compound fertilizer per mu between the two small rows. After covering the soil, the ridge height should be 5 to 6 cm, and the width around 60 to 70 cm. Then, cover the rows with mulch film, ensuring it is tightly covered and only 1 to 2 cm thick. It’s important to check the mulch after heavy rains and re-bury any exposed areas. Within 4 to 6 days after planting, you can transplant seedlings, breaking them if necessary, and planting them at the same time.
Proper watering is crucial for potato growth. After the initial emergence, water once, and then again when the plants begin to form a canopy. Once October arrives, the tubers start to swell, so keep the furrows moist. If the weather is dry, water every 7 to 10 days, but avoid overwatering or flooding.
For fertilization, apply organic manure (2 to 3 square feet) and 50 to 75 kg of specialized potato fertilizer during the early growth stage. At the same time, perform hilling to support the plants. During the middle of October, when the tubers are expanding, apply 25 to 50 kg of ammonium sulfate fertilizer and hill the plants again.
Pest control is essential to protect the crop. Common pests include ladybugs, beet armyworms, diamondback moths, and aphids. Use pesticides like Vegetable Farmer (600–800 times dilution), 2% Buck (1500–2000 times), and 2.5% Kung Fu (2000–2500 times), alternating between them every 7 to 10 days. From mid-September to mid-October, spray a protective agent such as 80% Mengfeiling, 8% Dasheng M45, or 58% Early Epidemic-MnZn at 600–800 times dilution. If disease symptoms appear, use a mixture of 58% Ledomil, 72% Kelu, and 50% Anker, diluted 600–800 times, and repeat every 7–10 days for 2–3 applications.
In addition, combine pest control with growth regulators. Spray "Tianda-2116" at 750 times dilution during tuber formation. Repeat the application after 10 to 15 days, and continue spraying every 7 to 10 days for two more times. This helps stabilize cell membranes, promote growth, and extend the growing period.
Therefore, amino acids are not only essential for human health, but also play an important role in beauty and skin care products.
Amino acids are the basic units of proteins and are essential organic compounds in life. There are about 500 different amino acids in nature, but among the amino acids that make up the proteins of living organisms, 20 are standard amino acids, which are connected in different sequences to form proteinaceous proteins that perform various physiological functions in living organisms.
Amino acids can be divided into the following categories according to their location and function in proteins
1.Essential amino acids
9 amino acids that the body cannot synthesize by itself or the synthesis speed cannot meet the needs, and must be ingest through food, including lysine, tryptophan, phenylalanine, methionine, threonine, isoleucine, leucine, valine and histidine (infants also need histidine).2.Non-essential amino acids
The human body can synthesize by itself and does not need to obtain directly from food, including glutamic acid, aspartate, alanine, serine, glycine, proline, cysteine, etc.3.Conditional essential amino acids
Under specific conditions (such as disease, stress), the human body's synthetic ability is reduced, and additional supplements are needed, such as arginine, glutamine, etc.Amino acids are also widely used in the field of skin care, as skin care ingredients, they mainly have the following effects
1.Moisturizing
Some amino acids such as glycine, alanine, etc. have good hygroscopic properties, which can help the skin retain moisture and enhance its moisturizing ability.2.Repair
Such as arginine, glutamic acid, etc. participate in the repair and regeneration process of skin cells, promoting wound healing.3.Anti-aging
Certain amino acids have antioxidant effects that can help fight free radical damage and slow down skin aging.4.Cleansing
Amino acid surfactants, such as sodium lauryl sarcosine, are commonly used in cleansing products for sensitive skin due to their mild, non-irritating properties.Therefore, amino acids are not only essential for human health, but also play an important role in beauty and skin care products.
Amino Acids,Taurine,L-Tyrosine, Food additives
Xi'an Day Natural Inc. , https://herb.dayqc.com