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The irrigation technology used by the fertilizer mach […]
The irrigation technology used by the fertilizer machine mainly refers to the actual needs of crops and fertilizers. The dripper on the capillary and the low-pressure pipe system are used to gradually and evenly drip the fertilizer solution needed by the crops into the roots of the crops. What should we pay attention to when using high-precision fertilizer machine equipment for irrigation? How to avoid excessive irrigation?
Compared with ordinary furrow irrigation, the irrigation method of fertilizer machine has a unique water and fertilizer supply method and irrigation volume, which makes the entire nutrient absorption process and transportation mechanism of crops show obvious differences. Therefore, compared with ordinary furrow irrigation, drip irrigation is integrated into the soil. Temperature, water, and fertilizer distribution, and salt transport are all significantly different. The shallow water and fertilizer supply and the salt accumulation between membranes aggravate the growth of crop roots close to the ground, restricting the roots of crops, which are the main organs for crops to absorb nutrients and water The morphological structure of the root system determines the space and scope of the root system to obtain water and nutrients, as well as its ability to compete with neighboring root systems for resources.
Therefore, root positioning is the first step to avoid over-irrigation. There are two main methods for root positioning: dig a profile to see the root system in the soil and direct observation: use equipment to scan the root distribution regularly in the lower root canal, and indirectly observe: use a moisture meter according to the root system The water absorption characteristics indirectly reflect the root depth. After determining the root distribution depth, the irrigation depth control is the second step to avoid over-irrigation. The relative water content can intuitively reflect the initial water content of the irrigation and is often used to determine whether irrigation is needed and to calculate the irrigation water. The basis of the amount.
There are also two main methods for determining the amount of irrigation based on relative water content: in terms of experience, according to soil moisture characteristics such as field water holding capacity and relative soil moisture content, combined with irrigation depth to determine the single irrigation amount and equipment combined with root distribution characteristics, predict the soil Buried water monitoring equipment uses set limits to control the start and stop of irrigation equipment.