Chinese cabbage thrives in cooler conditions. However, during the summer planting season, it often faces challenges such as high temperatures, drought, and heavy rains, which can lead to reduced yields or even total crop failure. To overcome these issues, farmers can effectively use shade nets to protect their crops, ensuring a successful summer harvest.
One common technique is **sunshade net floating surface coverage**. After sowing the seeds and watering them, black shade nets are placed directly on the soil surface. Once the seedlings emerge, the nets are removed promptly and can be reused on other fields. This method helps in achieving uniform germination, saves labor, and protects young seedlings from damage caused by heavy rain before they fully emerge.
Another approach is **shade net small arch or short flat planting**. After the initial emergence of seedlings, a low arch or flat structure (about 0.8 to 1 meter tall) is placed over the crop. This provides additional protection against high temperatures, heavy rain, and intense sunlight. The shade nets should be removed 3 to 5 days before harvest to allow the leaves to develop their natural color, improving the vegetable's market value.
For more advanced setups, **shade net greenhouse cover planting** is an option. Farmers can utilize the framework of summer greenhouses, stretch shade nets over the structure, and then plant the cabbage underneath. Some growers also add a layer of plastic film on top of the net, creating a "one membrane and one net" system that offers better protection against extreme weather.
In addition to using shade nets, it's important to select heat- and disease-resistant varieties such as Hot-you, Dwarf, Shanghai Cabbage, and Hangzhou Cabbage. These varieties are better suited for summer growing conditions. Farmers should also implement **staggered sowing methods** based on local climate conditions to improve survival rates. Typically, 1.5 to 2 kg of seeds per 667 square meters are used, with seedlings spaced 6 cm apart in rows and 4 cm between rows.
Choosing the right soil is also crucial. A well-drained loam that remains cool and retains moisture is ideal, especially if it's located near a water source for easy irrigation. Watering should be done carefully—preferably through sprinkler systems—to maintain optimal moisture levels. With proper care, a single plot can yield between 1,000 to 1,500 kilograms of cabbage within 18 to 25 days after sowing.
Omega-3 Fish Oil,Fish Oil 10/50 Tg,Omega 3 Fish Oil,10/50 Tg Fish Oil
ZHOUSHAN SINOMEGA BIOTECH ENGINEERING CO.,LTD , https://www.sinomegabiotech.com