Cucumbers are currently the primary vegetable crop grown in greenhouses. In addition to improving production management techniques, selecting cucumber varieties that are well-suited to local climate conditions is essential. This plays a crucial role in capturing market opportunities, achieving high yields, and increasing overall efficiency. Over the past few years, five cucumber varieties with outstanding performance have been identified through field trials, experiments, and observations. Below is an overview of their characteristics and production performance. 1. **Xintai Micole** This variety exhibits strong early maturity, with the first female flowers appearing between the 2nd and 4th nodes. The fruits are cylindrical, with a dark green skin, small and dense bumps, and a weight of about 250 grams. It has strong disease resistance, especially under low-temperature and low-light conditions. However, it is susceptible to downy mildew and powdery mildew when temperatures rise in spring, so moisture control is important. Another drawback is that the fruit tends to be long, resulting in a lower commercial quality. It's best used as a complementary variety. In a standard greenhouse (50 meters long, 7 meters wide), it can produce 3,500–4,000 kg per season. 2. **Jinchun No. 3** Developed by the Tianjin Cucumber Research Institute, this hybrid variety is also early-maturing, with the first female flower appearing at the 3rd or 4th node. The main fruit is a gourd-shaped cucumber, with thick stems, lush foliage, and dark green leaves. The fruits are 30 cm long, straight, and have moderate thorns. They are resistant to downy and powdery mildew, as well as low temperature and light conditions. Each fruit weighs around 200 grams, and the yield is dense. In overwintering greenhouses, it produces a high early yield but tends to age prematurely later on. Proper root rejuvenation and foliar feeding are necessary for optimal performance. Although its total yield may not match Xintai Micole, it has a much higher commercial value due to its shorter, more uniform shape. 3. **Jinyou No. 2** This variety has strong growth potential, with the first female flower appearing between the 3rd and 4th nodes. The female flower rate exceeds 30%, and the fruits are straight, reaching up to 35 cm in length. They are dark green, resistant to low light and temperature, and highly resistant to wilt, downy, and powdery mildew. It has high yield and efficiency, but it is sensitive to poor management. Especially before and after the Spring Festival, the plants may experience fruit drop within 10–20 days after harvest. Therefore, careful temperature control is essential during cultivation. 4. **Jinyou No. 3** This variety is dominated by main vine growth, with the first female flower appearing around the 4th node. The female flower rate is approximately 30%. The fruits are short, dark green, glossy, and feature prominent bumps and dense white thorns. The flesh is crisp, with a green-white color, offering excellent quality and high commercial value. It outperforms Jinchun No. 3 by about 10% in yield before the Spring Festival. It is highly resistant to low temperatures, low light, wilt, downy, and powdery mildew, and can reach up to 8,000 kg per mu during winter. It is considered one of the top varieties for greenhouse cultivation. 5. **Jinlu No. 3** This variety is mainly vine-based, with the first female flower appearing between the 3rd and 7th nodes. The female flower node rate is around 40%, and the plant is compact with strong growth and dark green, shiny leaves. The fruits have prominent bumps, dense white thorns, and are suitable for low-temperature and low-light conditions. To ensure proper growth during winter, it's important to establish a strong framework early in the season.

Amino Acid Chelate Compound

The main effects and production process of Amino Acid chelate: improve bioavailability: after the metal ions in amino acid chelate are combined with amino acid, its absorption and utilization in human body or plants and animals are greatly improved, improve stability: amino acid chelate is more stable in and out of the body and does not easily react with other components, thus maintaining the activity of minerals.
Promote plant growth: In agriculture, amino acid chelate can be used as trace element fertilizer to improve the absorption of trace elements by plants and enhance their disease resistance and growth rate.
High purity amino acids and metal salts are selected as raw materials. Common amino acids include glycine, lysine, etc. Metal salts include zinc sulfate, magnesium sulfate, etc. The amino acid solution is mixed with the metal salt solution in a certain proportion and the reaction is carried out under suitable pH and temperature conditions. This process is usually carried out in a stirred reactor to ensure a homogeneous reaction.
The quality of the produced amino acid chelate is tested to ensure that its purity and stability meet the requirements. Finally, the product is packaged to prevent moisture and contamination.
Amino acid chelates are widely used in human and animal nutritional supplements and plant fertilizers because of their high efficiency and safety.

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