The rains in recent days have had an adverse effect on the growth of vegetables. In greenhouses and greenhouses, due to the closing of the air outlets, the rainwater is not brought into the shed in time, and the open vegetables are more likely to be washed and rinsed by rain due to lack of shelter. Once the vegetable fields are poorly drained, the roots of the vegetables can easily be damaged, especially in the flat. Planted vegetables are more prone to picking roots and dead trees.
Take care of the ventilation outlet of the shed
Recently, the rainy weather lasted for a long time. Many vegetable farmers poured rain into the trees because they did not close the tuyers in time, causing the vegetables to die; some of the greenhouses had been kept closed, and the greenhouses had high temperatures and high humidity, leading to nutritional consumption of vegetables. Many, poor resistance, pests and diseases. So, how can we ensure that the greenhouses are well ventilated and can prevent rain from entering the shed? The two good practices of vegetable farmers are worth learning from.
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Method one: Divide the storage ditch at the interval between the vegetable and the front face. The ditches to be dug are not too deep to block or store the rain water left over from the shed film, and the height of the ditch near the vegetable is prevented from overflowing into the rows after the rain has accumulated in the ditch. Ditches can also be dug on both sides of the arch. Such a storage ditch is mainly for rainfall with long rainfall and little rainfall, and must be closed when the rainfall is large.
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Method 2: Add a layer of membrane to the front of the greenhouse. A vegetable farmer added a layer of film on the inside of the front face. The rainproof effect was quite good. It is understood that the width of the added film is about 50 cm. If it is too wide to block ventilation, the length is the same as the length of the front face of the shed. One end of the film is covered with soil at the bottom of the front face of the shed, and it is tightly attached to the lower end of the insect net, and the other end is fixed on the column at the front face with a rope or wire. The film between the two columns is then tied with rope or wire. Hang it to make the membrane a canal, and a dozen centimeters high “thin film barrier†is formed near this end of the column. Through this arrangement, not only can some rainwater be blocked when raining, but it can also catch some rainwater and prevent rainwater from entering the shed.
Open-air vegetables do a good job after the rain
Different from greenhouses and greenhouses, it is difficult for open-air vegetables to take effective measures to prevent rain. They can only be washed by rain. Therefore, timely remediation after rain is a key measure to avoid losses.
After heavy rain, excessive water in the vegetable field will cause poor soil permeability. Vegetable roots will undergo anaerobic respiration for a long time, and many self-toxic metabolites will be produced, which will cause damage to the root system. Therefore, after the rain, we must pay close attention to clearing the drainage ditches. Rows of water in the fields. Afterwards, when the ground is no longer muddy, it is necessary to timely cultivating loose soil to avoid surface compaction of the soil and promote root recovery. The rainfall will cause the loss of soil nutrients, vegetable roots are injured, and the ability to absorb water and fertilizer is reduced. Farmers can use the 0.2% potassium dihydrogen phosphate or other foliar fertilizers for extra-root dressing after discharge of stagnant water in the field to promote the recovery of vegetables as soon as possible. After sunny days, NPK fertilizers and organic fertilizers should be quickly applied to restore soil fertility. Leaf vegetable vegetables should be dominated by nitrogen fertilizer, and sparsely applied. Melons, solanaceous vegetables, and legume vegetables should be combined with NPK fertilizers. After heavy rain, the humidity in the field is high, vegetables are susceptible to bacterial soft rot disease, damping-off disease, epidemics, and other diseases, and vegetable farmers should promptly spray and control the disease. Chlorothalon, thiophanate-methyl and other fungicides can be quickly sprayed on sunny days to prevent bacteria from invading the wound. Severely damaged vegetable fields should be immediately cleaned of rotten vegetables, killed vegetables, timely remove the broken leaves of vegetables broken by heavy rain in the field; stumbling plants to timely support, earth-cultivation, wash the foliar sludge to promote its rapid recovery. After the continuous heavy rainfall at the end of the continuous heavy rain, the vegetable field in the sandy soil can be immediately ploughed, robbed or transplanted. The clay-based vegetable plots are allowed to stand still and dried slightly, then the soil is sowed and planted.
After the rain, some vegetable farmers will take measures to embarrass the pouring garden. The northern vegetable newspaper is also often reported. It reminds farmers here that not all plots are suitable for the garden. For example, soils with low soil viscosity, low organic matter content, poor soil aggregate structure, and poor air permeability are likely to be easily rooted due to rain and water infiltration. At this time, watering will make it easier for vegetables to root. In addition, after a small to medium-term rain, most vegetables can be “poured gardensâ€; after a heavy rain, when the fields are not filled with water, it is not possible to “pour a gardenâ€. Main measures should be drainage and disease prevention.
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