1. Cultivation time.
Summer sowing time for celery cultivation can be sown from mid-April to late June. It will be available from late July to early October.
2. Variety selection.
The whole growing season of summer celery is in the hottest season. At this time, the disease is heavier and the management is slightly improper. It often affects the quality of celery, such as excessive fiber and aging of petiole. Therefore, heat-resistant, disease-resistant and good-quality varieties should be selected. This period is still suitable for white-green, yellow-green varieties, these varieties are generally crisp, less fiber, the appearance gives a fresh impression of tenderness. Most of the hollow varieties are more heat-resistant, grow more vigorously, and have less fiber, so it is advisable to plant celery in the summer in hollow varieties. Commonly used varieties are: flat yellow leafy celery, Xintai celery, glass crisp celery, the United States celery.
3. Seeding method.
Summer celery cultivation uses live broadcast method. In order to reduce the use of seedling management, nursery cultivation is currently used. Soaking and germination should be done before sowing. In order to prevent seed germs, spread celery early blight and spot blight, apply soaking in warm water at 48°C for half an hour, and then germination, and sow seeds after sowing. Sowing or sowing method can be used when sowing, no matter what method is used, wet sowing, that is, the first watering the pot, until the water seepage after sowing, after sowing cover soil 0.5 to 1 cm. Slow celery sprouting, long seedling period, in order to prevent high temperatures, dry hot wind, drying seeds, but also to reduce the temperature, to promote seedlings and prevent heavy rain seedlings, should be shade on the seedlings. Commonly used shade covers are: straw, straw, old plastic film, sunshade net yarn. If there are no such products, wheat straw can also be used to sprinkle in the oysters or between the rows to cool down, protect the oysters, and prevent heavy rain from impacting. However, when the seedlings are in full, the buckwheat should be taken out in time to prevent entanglement with the wheatgrass after seedlings are affected. Celery grows. Other shade coverings should be gradually withdrawn after the emergence of the seedlings. Every time 1 to 2 days before sowing until emergence, 1 small water should be poured to keep the surface wet. Because the celery seed is small, the top soil is extremely weak, and the soil surface is slightly dry and hard to stand up. It will not be able to emerge. If there is hot rain before the emergence, cool water should be used in order to prevent the seedling from suffocating due to lack of oxygen and prevent it from suffocating. High temperatures inhibit germination and emergence. When growing seedlings, they should be planted when the seedling age is about 50 days or 5 to 6 leaves.
4. Cultivation management.
Summer celery should not be planted on continuous cropping and poorly drained vegetable plots. Because continuous cropping often leads to lack of certain elements in the soil and increases in pests and diseases, it is better to choose the vegetables in different subjects to rotate in the same field, or to select the plots where vegetables and other food crops rotate. When working on soil preparation, it is not advisable to use the clay to make it too thin, so as not to obstruct the speed of drainage and cause the roots to breathe hard and rot. It is advisable to use a north-south orientation to avoid or reduce the occurrence of sunburn, which is 30 to 40 cm high. In sunny days, it is necessary to keep the rammed earth properly moistened. The water in the rainy days should be drained as soon as possible to prevent the accumulation of water for too long.
In summer, high temperature and rain, soil fertility consumption is obvious, especially in the dry soil and the most scarce organic matter on the slope, easily lead to plant growth weakness, low resistance, easy to invade pests and diseases. Therefore, more fully decomposed organic fertilizer should be applied to increase soil organic matter content, promote rapid and robust plant growth, and enhance disease resistance. Fertilizer application should pay attention to a small number of multiple applications, deep application and timely soiling (especially for volatile decomposition of fertilizers), fertilization should be applied in the afternoon or before the rain, to prevent excessive application of fertilizer, resulting in salt accumulation Excessive salt damage.
The soft-growing celery grows during the rainy season and the weeds are very serious. In addition to live broadcasting, the cultivation area is large, and weeding is very laborious. Pay special attention when weeding. Do not bring out seedlings. To this end, a certain amount of herbicide can be applied to prevent weeding during soil preparation. Usually 480 g of 48% trifluralin or 48% of 3,000 g of pullulan and 35 kg of water are sprayed on 1 hectare of ground. , Then shallow cultivator 10 cm, evenly mix the herbicide with the soil, can effectively prevent a variety of weeds. During the drought, water is poured every 2 to 3 days. Watering not only satisfies the growing needs of celery, but also lowers the temperature of the soil, creating a microclimate conducive to the growth of celery.
Summer sowing time for celery cultivation can be sown from mid-April to late June. It will be available from late July to early October.
2. Variety selection.
The whole growing season of summer celery is in the hottest season. At this time, the disease is heavier and the management is slightly improper. It often affects the quality of celery, such as excessive fiber and aging of petiole. Therefore, heat-resistant, disease-resistant and good-quality varieties should be selected. This period is still suitable for white-green, yellow-green varieties, these varieties are generally crisp, less fiber, the appearance gives a fresh impression of tenderness. Most of the hollow varieties are more heat-resistant, grow more vigorously, and have less fiber, so it is advisable to plant celery in the summer in hollow varieties. Commonly used varieties are: flat yellow leafy celery, Xintai celery, glass crisp celery, the United States celery.
3. Seeding method.
Summer celery cultivation uses live broadcast method. In order to reduce the use of seedling management, nursery cultivation is currently used. Soaking and germination should be done before sowing. In order to prevent seed germs, spread celery early blight and spot blight, apply soaking in warm water at 48°C for half an hour, and then germination, and sow seeds after sowing. Sowing or sowing method can be used when sowing, no matter what method is used, wet sowing, that is, the first watering the pot, until the water seepage after sowing, after sowing cover soil 0.5 to 1 cm. Slow celery sprouting, long seedling period, in order to prevent high temperatures, dry hot wind, drying seeds, but also to reduce the temperature, to promote seedlings and prevent heavy rain seedlings, should be shade on the seedlings. Commonly used shade covers are: straw, straw, old plastic film, sunshade net yarn. If there are no such products, wheat straw can also be used to sprinkle in the oysters or between the rows to cool down, protect the oysters, and prevent heavy rain from impacting. However, when the seedlings are in full, the buckwheat should be taken out in time to prevent entanglement with the wheatgrass after seedlings are affected. Celery grows. Other shade coverings should be gradually withdrawn after the emergence of the seedlings. Every time 1 to 2 days before sowing until emergence, 1 small water should be poured to keep the surface wet. Because the celery seed is small, the top soil is extremely weak, and the soil surface is slightly dry and hard to stand up. It will not be able to emerge. If there is hot rain before the emergence, cool water should be used in order to prevent the seedling from suffocating due to lack of oxygen and prevent it from suffocating. High temperatures inhibit germination and emergence. When growing seedlings, they should be planted when the seedling age is about 50 days or 5 to 6 leaves.
4. Cultivation management.
Summer celery should not be planted on continuous cropping and poorly drained vegetable plots. Because continuous cropping often leads to lack of certain elements in the soil and increases in pests and diseases, it is better to choose the vegetables in different subjects to rotate in the same field, or to select the plots where vegetables and other food crops rotate. When working on soil preparation, it is not advisable to use the clay to make it too thin, so as not to obstruct the speed of drainage and cause the roots to breathe hard and rot. It is advisable to use a north-south orientation to avoid or reduce the occurrence of sunburn, which is 30 to 40 cm high. In sunny days, it is necessary to keep the rammed earth properly moistened. The water in the rainy days should be drained as soon as possible to prevent the accumulation of water for too long.
In summer, high temperature and rain, soil fertility consumption is obvious, especially in the dry soil and the most scarce organic matter on the slope, easily lead to plant growth weakness, low resistance, easy to invade pests and diseases. Therefore, more fully decomposed organic fertilizer should be applied to increase soil organic matter content, promote rapid and robust plant growth, and enhance disease resistance. Fertilizer application should pay attention to a small number of multiple applications, deep application and timely soiling (especially for volatile decomposition of fertilizers), fertilization should be applied in the afternoon or before the rain, to prevent excessive application of fertilizer, resulting in salt accumulation Excessive salt damage.
The soft-growing celery grows during the rainy season and the weeds are very serious. In addition to live broadcasting, the cultivation area is large, and weeding is very laborious. Pay special attention when weeding. Do not bring out seedlings. To this end, a certain amount of herbicide can be applied to prevent weeding during soil preparation. Usually 480 g of 48% trifluralin or 48% of 3,000 g of pullulan and 35 kg of water are sprayed on 1 hectare of ground. , Then shallow cultivator 10 cm, evenly mix the herbicide with the soil, can effectively prevent a variety of weeds. During the drought, water is poured every 2 to 3 days. Watering not only satisfies the growing needs of celery, but also lowers the temperature of the soil, creating a microclimate conducive to the growth of celery.
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