Summer sowing watermelon is a piece of watermelon planted before and after summer wheat harvest, from late May to early June. It is also known as watermelon. What should be paid attention to cultivation of summer sowing watermelon in open field, and the master of agricultural extension and senior agronomist Zhang Ligong should provide guidance for the majority of growers.
Selection
The fruiting season of summer sowing watermelon is in the season of high temperature and rainy season. Therefore, besides the requirement for strict selection of plots, the selection of plots should also pay attention to the selection of high topography, good irrigation and drainage conditions, deep soil and fertile sandy soil. Loam.
Site preparation base fertilizer
Due to the summer rainfall, it is easy to cause the loss of fertilizer and leaching. Therefore, the base fertilizer should be dominated by long-lasting organic fertilizer, and the amount should be sufficient. After the harvest of the former crop, deep plowing was immediately carried out. Use sorghum or small high ridge cultivation to facilitate drainage and flood prevention.
Covering silver gray film
Summer sowing watermelon during the birth of high temperature and rain, prone to a variety of diseases and insect pests, the characteristics are vulnerable to aphid damage. The use of silver-gray reflective mulching is an effective way to repel aphids and reduce the harm of viruses. In addition, it can stabilize soil moisture (both drought and flood), prevent soil compaction and reduce the loss of soil nutrients, improve plant illumination.
Select the appropriate variety
During the growth of summer sowing watermelon, the temperature is high, the rain is much, the air humidity is high, and it is easy to suffer the pest damage. Therefore, the requirements for varieties of watermelon cultivated in summer are relatively strict. It requires that the cultivated varieties must have the characteristics of disease resistance, moisture resistance, high temperature resistance, strong growth potential, and strong photosynthetic capacity. In general, disease-resistant, high-yield, and high-quality varieties introduced from the more rainy regions of the South have performed better during summer sowing.
Sowing to live broadcast
This watermelon is mainly broadcast live, generally sowed at the end of May in early June, 2 to 3 days before sowing soak germination, most seeds can be sown after dew. Seedlings should be checked every day after sowing, and the cotyledons should be promptly broken after the emergence of the cotyledons to prevent seedlings at high temperatures. The broken membrane should be careful not to make the break too large. You can use your fingers to burrow a hole about 2 cm in diameter to release the seedling. After the seedlings, the basement membrane of the seedling stem should be sealed with soil.
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