Types of irrigation
Pre- and after-sowing watering is performed when the surface layer of the soil is drained, which prevents the emergence of amicable and timely shoots. They are necessary for the cultivation of crops with small seeds, as well as for crops sown in later terms as repeated.
Planting and Post-planting watering is needed to improve the survival of seedlings when planting it in the ground.
Vegetative irrigations are carried out during the growth of plants, distributing them during the growing season, depending on the phases of the development of crops.
Refreshing watering is carried out by the method of sprinkling in the hot time of the day to lower the temperature of the surrounding air and increase its humidity.
Fodder irrigation is very effective, as with them water is applied to fertilizers, which are in it in a dissolved state, accessible to the root system of plants.
Water recharge watering is carried out in autumn in arid regions with the purpose of replenishing the moisture reserves in the soil in the autumn-winter period.
Cabbage and cucumbers, which have large plates and a high degree of transpiration, need not only sufficient soil moisture, but also high relative air humidity, which can be increased by sprinkling and carrying out refreshing irrigation with a norm of 5-7 l / m2.Refreshing watering is carried out in the hot part of the day. Such watering can increase the water content in leaves, remove dust from them and significantly improve the conditions for photosynthesis, and increase the formation of green mass. In addition, with the help of refreshing irrigation it is possible to increase the relative humidity of the air and reduce its temperature.
To reduce the frequency and volume of watering, it is necessary to take measures to retain moisture in the soil.
Do not leave unprospered soil for a long time, otherwise under the influence of the sun and wind it will dry quickly and additional moisture will be required before sowing.
Regularly loosen the soil, destroying the capillaries, removing moisture on the surface, to maintain the soil in a loose state.
Mulching the soil surface with organic materials, film, paper.
If possible, protect the soil surface on the ridges from the drying wind, creating protective plantations, wings from tall plants, shield barriers, etc.
Good results also give the use of rocking landings, since some shading in the intercell space and slow motion of the air allow maintaining high humidity.