Detailed Explanation of Key Techniques for Summer Squash Cultivation Through the Summer

The so-called over-summering cultivation refers to a cultivation method in which sowing is done from the end of May to early July, and harvesting begins from early July to late August. Its models are divided into three major types: large cold sheds, insect-proof net-covered sheds, and open field. So, do you know the cultivation techniques for over-summering summer squash?

1. Cultivation techniques for over-summering summer squash

1. Variety selection

Choose varieties with relatively strong virus tolerance. To date, there is no absolutely virus-resistant variety. However, varieties with relatively strong virus tolerance have been screened out. Through trial planting in recent years, varieties such as Xiaguan, Lüfeng, and Cuiyu have all shown advantages such as strong tolerance, green fruit, and long fruit, and can be selected for planting.

2. Fertilization, land preparation, and ridging

Apply sufficient decomposed organic fertilizer: the degree of fertilizer decomposition is an important factor determining whether virus disease occurs, because immature fertilizer or chemical fertilizer can easily damage roots and cause viruses. How to tell whether the fertilizer is decomposed? Just see whether flies land on it. If there is no decomposed fertilizer, it is recommended to apply more high-quality microbial bacterial fertilizer such as Kunyijian, which has a good effect. Deeply plow the soil. Deep plowing activates the soil layer, improves permeability, and benefits rooting; strong roots mean disease resistance. Build wide and high ridges. First, summer has a lot of rain, which helps drainage; second, ridging increases the thickness of the mature soil layer and fertilizer, facilitating a large root system. Generally, the ridge height is 20 cm, the ridge width is about 1.5 m, the ridge surface is flat, the ridge furrow width is 50 cm (the working row/walkway), 2 rows are planted on the ridge, and the plant spacing is 90 cm.

3. Cultivate strong seedlings

For factory seedling cultivation, the seedling age should be controlled at about 10 days, or direct seeding can be done after germination. During the seedling stage, apply sufficient bacterial fertilizer, increase the temperature difference, provide sufficient light, and prevent diseases and pests early in a timely manner. Achieving high-quality strong seedlings is crucial.

4. Strengthen mulching

The main mulching methods are silver-gray film plus soil and firewood or straw, two kinds. Practice has proved that firewood or straw is stronger than silver-gray film plus soil, silver-gray film plus soil is stronger than silver-gray film, and silver-gray film is stronger than open field. The thickness of soil pressed on the silver-gray film should reach more than 2 cm. The main purposes of mulching are moisture retention, preventing crusting, and suppressing weeds, which are crucial for preventing the occurrence of viruses.

5. Pay attention to disease and pest control

Common diseases and pests include bacterial leaf blight, leafminer, and whitefly. They should be prevented early before occurrence.

6. Watering management

After mulching, watering can only be done in the furrow, and only half the furrow should be watered. Never let water spread over the ridge surface; otherwise, the ridge surface will crust and viruses will easily occur. As long as the ridge surface is loose and breathable, and the ridge furrow is moist and not dry, viruses will be driven away and a bumper harvest will be obtained.