Increase the application of organic fertilizers, such as green manure, compost and manure, to improve the soil structure and improve the soil fertility(4 cell propagation trays wholesale). Droplets are easier to deposit and spread on the target. The application amount of chemical fertilizer can be reduced properly, which can not only improve the content of organic matter in soil(72 cell trays), but also reduce the residual accumulation of salt in soil.
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Combined with deep ploughing, the soil structure can be improved(6 cell propagation trays wholesale), the permeability of soil can be improved, the soil can be activated, the lateral root extension of vegetable crops can be improved, the ability of root system to absorb water and nutrients can be increased, and its salt resistance can be improved(72 cell trays bulk). It is suggested that the application of organic fertilizer and biological fertilizer should be increased properly in the base fertilizer.
(cheap plastic cell seedling trays suppliers vietnam)In particular, it is pointed out that organic fertilizer can only be applied in solar greenhouse after 3-4 months of stacking and full maturity(8 cell propagation trays wholesale). It is suggested that during the period from late June to the end of September, the film on the top of the greenhouse should be removed as early as possible(plastic seed trays), so that the natural rainfall in the rainy season can fully leach the soil and reduce the salt concentration in the cultivated layer of the soil.
In addition, planting sudangrass can absorb the excess salt of soil, which is one of the better methods to solve the secondary salt of greenhouse soil(12 cell propagation trays wholesale). Improve salt tolerance of vegetables. The salt tolerance of the seeds can be improved obviously by soaking the seeds in 0.6% salt solution for 6-12 hours(plastic garden pots wholesale). Spraying 50 mg / kg gibberellin can stimulate the growth of vegetables, dilute the salt concentration in the body and enhance the salt tolerance.(cheap plastic cell seedling trays suppliers vietnam)
Generally, in the production season, the method of watering under the mulch film is adopted to reduce the evaporation rate of the soil surface, so as to slow down the rising speed of the deep salt content of the soil(18 cell propagation trays wholesale). Generally speaking, the nozzle of the knapsack electric sprayer should be kept at 30-50 cm distance from the target, the ground temperature can be increased, and the following mobile sprayer should be kept at a distance of 1 meters(large plastic planters cheap).
(cheap plastic cell seedling trays suppliers vietnam)It is necessary to choose suitable spraying equipment and sprinkler according to the object of prevention and control and the space condition(36 cell propagation trays wholesale). In addition, some measures, such as changing the surface soil of the greenhouse and popularizing the organic ecological soilless cultivation technology of vegetables(plastic flower pots wholesale), can effectively prevent the salinization of the greenhouse soil and reduce or avoid the occurrence of salt damage.
In the absolutely closed greenhouse, the smoke machine can be chosen when controlling the tiny pests such as diseases and whiteflies, aphids and so on(40 cell propagation trays wholesale). In the time of preventing and curing these pests and diseases in the open field, we have to choose larger instruments and sprinklers, and the fog machine is obviously not suitable(nursery plant pots wholesale). From deposition to development, the liquid medicine will be affected by many factors, and the air humidity has a great influence.
When the main air humidity is too high(50 cell seedling trays wholesale), the amount of medicine solution deposited on the plant surface should be calculated according to the amount of medicine added to each barrel of water according to the concentration multiple, and the necessary barrels of water per mu of land, the spray speed and other details should be calculated(plastic plant pots bulk). Eggplant has strong salt resistance, followed by tomato, pepper, zucchini and cucumber.(cheap plastic cell seedling trays suppliers vietnam)