At the end of September and early October, the management of greenhouse vegetables
With a new round of rainfall across the country, the climate has gradually changed. The production of autumn vegetables in all parts of the country should be adapted to local conditions, give play to advantages, and take effective measures to ensure the safe production of vegetables in autumn.
Late summer vegetable management
At present, melons and vegetables are at the peak of the results. Water should be poured in time with the weather. Generally, water should be poured every 3 to 5 days, and topdressing should be carried out in due course.
Most of the solanaceous vegetables have entered the middle and late growth stages, and should continue to strengthen the field management in the later stage, timely pruning and smashing, strengthen the management of fertilizer and water, and promote the plant to rejuvenate.
As the weather gradually turns cold, cowpeas and lentils begin to enter the harvest period, and attention should be paid to strengthening fertilizer and water management. The general principle of fertilization is: to mix good fertilizers, to change soil with fertilizer, to raise roots with fertilizer.
Because most of the summer vegetable cultivation is cultivated in flat sorghum, the cultivation of sorghum is poor, which is not conducive to root growth. Therefore, in the cultivation of flat sorghum, the application of biological bacterial fertilizer, full use of biological bacteria fertilizer to improve soil fertile soil, root-raising effect, cultivate strong trees, improve crop disease resistance and resilience.
In addition, for plants that are too weak, sprayed foliar fertilizer, trace element fertilizer, chitin, and biological fertilizer can be used to promote the growth of the tree. For example, after the vegetable is slowed down to the flowering stage, the zinc leaf fertilizer can be sprayed, which not only prevents the yellowing of the parietal lobe, but also helps to enhance the resistance of the plant to viral diseases.
Seasonal vegetable management
On September 23, it is the lunar calendar, and the vegetable farmers should seize the favorable opportunity, manage the autumn vegetables in the field, and do a good job in winter sowing and vegetable cultivation in protected areas.
Scientifically arrange the gargle and do a good job of changing the season vegetables. According to the market and its own advantages, vegetable farmers should scientifically and rationally select varieties and connect wells, so as not to mistake the time of farming; and according to different crops and different mouthwashes, scientifically plan fertilizer and water, rational use of drugs, timely harvesting and sowing, and do a good job in field management. , get the best income.
Green onions are bred before and after the autumn equinox, and fast-growing leafy vegetables such as Shanghai green, coriander, and oily wheat are grown. Overwintering a large cucumber grafting seedlings, the grafting period is from September 20 to October 15 and can not be prematurely nursed.
The radish and carrots with excessive growth of the leaf plexus are sprayed with plant growth regulators to control the growth of the upper leaves, so that the nutrients are transferred to the roots to prevent the formation of large radishes. In this period, the wintering, tomato, pepper and eggplant can continue to grow. The seedling age is 40~45 days, and it is planted in the greenhouse when it is 5~6 leaves in mid-October.
Improve the resistance of vegetables themselves
In bad weather, improving the resistance of vegetables themselves is also one of the important means to cope with harsh environments and reduce the occurrence of diseases. To improve the resilience of vegetables, it is necessary to work from roots and leaves.
It is recommended that vegetable farmers pay attention to the application of functional fertilizers for rooting before the advent of bad weather, such as humic acid, alginic acid, chitin and other fertilizers. It can also apply full-nutrient foliage such as chitin, alginic acid and photosynthetic power. Fertilizer, supplementing the urgently needed medium and trace elements, organic nutrition, etc., can not only alleviate the shortage of nutrient supply, but also improve the cold resistance and disease resistance of the leaves.
Reinforced shed to prevent rain and windy weather
First, it is necessary to fix the grass curtain or insulation on the back slope of the greenhouse. Choose a No. 6 wire and pull it on the back slope of the greenhouse or the insulation is 20 cm inside. The two sides are fixed on the falling rock under the east and west gables, and then tightened with a tight line machine. Or every 10 meters on the back slope of the greenhouse, the fixed steel bars are pressed with stones to prevent the straws from being loosened by the wind after the steel bars become loose.
The second is to cover the film or non-woven fabric to avoid the back wall and east and west gables being soaked by rain. The shed is covered with a film or a non-woven fabric, and the rainwater flows down the river, so that it does not wet the shed and is also windproof. Since the film ages quickly and is easily scratched, it is necessary to check the back wall covering film at any time before heavy rain to ensure no water leakage.
The third is to dig the drainage channel around the shed in advance. The existing drainage channels will clean up the debris in the canal in time, keep it smooth, and prevent rainwater from instilling.
Vegetable field management after the rain
Strengthen the drainage and accumulation of land in the field to clear the drainage ditch in time, grab the water accumulated in the field, minimize the time of water accumulation in the vegetable field, and reduce the occurrence of vegetable diseases.
When it is timely to plough the pine land, you can grasp the cultivating loose soil, break the surface layer, improve soil permeability and promote root development.
Timely prevention and control of soil-borne diseases, appropriate amount of nutrients due to the need to discharge more water from the farmland after the disaster, some fertilizers, especially potassium fertilizer, will be lost with the water, so, after drainage, especially watermelon, melon fields should be topdressed in time. Topdressing is mainly based on biological bacterial fertilizer, which not only improves the soil, promotes the growth of crop roots, but also improves the disease resistance of crops and prevents the growth of soil-borne diseases.
After heavy rain, it is not advisable to use a large amount of nitrogen fertilizer and chemical fertilizer to prevent the damage of the roots. Foliar fertilizer can also be sprayed to enhance the disease resistance of crops.
In response to the "autumn tiger", after the rain, it should be carried out in the "pour watering garden", that is, the raining of the garden during the high temperature at noon or afternoon, and the watering of the garden when the temperature is still high after the rain. This operation can reduce soil temperature and alleviate rainy season diseases.
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