High-yield cultivation techniques of cucumber in open field

Due to the high temperature and rain in summer and the outbreak of pests and diseases, the production of cucumbers in summer and autumn is seriously affected. After several years of production practice, we have concluded a set of high-yield technologies suitable for cultivation of summer and autumn cucumbers in open field. Now we will introduce them as follows.

First, select good varieties

Cucumber cultivation in the open field in summer and autumn should be mainly heat-resistant and disease-resistant varieties, such as Jinchun No. 4, Jinza No. 2, and Xia Feng.

2. Site preparation, fertilization, and hoeing

Due to the rainy summer, the fertilizer is easy to be lost, and organic fertilizer should be re-applied. Before the site preparation, 4,000 m to 5000 kg of rotten mature fertilizer should be applied. The site preparation should not be deep, and about 15 cm should be used to avoid waterlogging in deep cultivation.

Do hoeing after site preparation. Summer and autumn cucumber cultivation must use small high ridges or high ridges, flat ridges must not be used to avoid waterlogging. The way to do it is:

1. The small high ridge is 50cm wide, 20cm high, and the ditch is 70cm wide. Two rows of cucumbers were planted on the two sides of the small high salamander with a plant spacing of 20-25 cm.

2. First, make a high ridge with a high ridge, the width of the hoe is 70cm, and the width of the ditch is 50cm, then open a small ditch about 20cm deep in the middle of the high ridge, and the seeds can be sown on the inside of the small ditch after watering.

While making the hoe, we should also make drainage ditch in advance to prepare for drainage after rain.

Third, sowing

The sowing time can be arranged from mid-June to early July according to the crop stubble time of the previous crop. More live broadcasts can also be used for seedling transplanting. Due to the weak summer high-temperature melon seedlings, it can be properly densely planted, generally 5000 to 5,500 plants are planted at 667m2.

Field management

1. Dingmiao Bumiao When young plants grow true leaves, thinning and mending are started. In summer, due to the torrential rain and pests and diseases, the seedlings should be set sooner or later, so as to avoid shortage of seedlings. When the seedlings grow to 3 to 4 true leaves, they will be fixed.

2. Shallow tillage should be carried out after weeding and seedling emergence to promote rooting of seedlings and prevent excessive growth. Before the melon is planted, it has to be cultivated many times, with emphasis on weeding.

3. After the drainage sowing is finished, we must start to repair the drainage ditch, strengthen the channel, and remove debris at the bottom of the ditch. Once the weather changes, the drains should be opened, and the accumulated water should be removed in time during heavy rain.

4. Topdressing and watering the ground in summer and autumn, special attention should be paid to waterlogging prevention. Watering depends on the sky and the ground. At the seedling stage, you can apply a little chemical fertilizer to promote seedling growth. After the fruit is planted, it is usually topdressed every 10 to 15 days, and 10 to 15 kg of nitrogen, phosphorus, and potassium compound fertilizer is applied every 667 m2. There should be plenty of fertilizer and water in the fruit growing period. After the "heat", the weather turns cold. You can spray 0.2% potassium dihydrogen phosphate or 0.1% boric acid solution to prevent melons.

5. Cutting, pruning, and bundling. After watering, it will be inserted and combined with bundling for pruning. Most of the varieties cultivated in summer and autumn have side vines, and the base vines are not left.

V. Pest Control

Cucumbers in summer and autumn exposed field have many diseases and insect pests, and they are more serious. Therefore, they should be sprayed regularly with emphasis on prevention and control. Diseases mainly include downy mildew, powdery mildew, anthracnose, and keratosis. Downy mildew can use 72% DuPont Cloux wettable powder 600-800 times liquid; powdery mildew can use 15% powder rust and wettable powder 1500 times liquid; anthracnose The disease can be treated with 500% solution of 50% anthracnose fome wettable powder; bacterial angular spot disease can be sprayed with 500% solution of 30% DT fungicide. Insect pests are mainly aphids and mites, which are sprayed with 1000% solution of 40% dimethoate EC or 1500 times solution of 20% aifudine 2.

Six, harvest

The high temperature in summer and autumn only takes 40 to 50 days from sowing to harvesting. The weather is gradually cool after the fruit is harvested, and the time required for harvesting is not strict.

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