Water and fertilizer integrated sprinkler irrigation technology can irrigate scientifically according to the crop's water needs and soil conditions, improving the microclimate in the field and keeping the water, fertilizer, air, and heat in the soil in optimal condition. Secondly, sprinkler irrigation can wash away dust and pests from the surface of leaves, reducing tea plant diseases and insect pests, and enhancing photosynthesis. In dry seasons, under suitable irrigation conditions, it can increase tea yield and significantly improve tea quality. Micro-sprinkler irrigation is a new type of water-saving irrigation method developed on the basis of drip irrigation and sprinkler irrigation. It has the advantages of saving water, increasing crop yield, energy saving, easy automation control, and adaptability to terrain.

The water-fertilizer integrated system utilizes the principle of crop nutrient absorption, combining irrigation and fertilization processes. Fertilizer is dissolved in water and delivered through a pressure irrigation system, achieving simultaneous water and fertilizer management to improve water and fertilizer utilization efficiency. In recent years, with the continuous development of agricultural technology, the water-fertilizer integrated system has gradually become standard equipment in modern agriculture due to its advantages in water and fertilizer saving and precise control. However, in large-scale greenhouses, once the water-fertilizer integrated system malfunctions, it will cause unpredictable damage to agricultural production. Equipment inevitably faces obsolescence and aging. Late winter and early spring is the start of a new round of agricultural production.

Drip irrigation is a form of irrigation that delivers water drop by drop, uniformly and slowly, into the soil near the plant root system. The small water flow rate and slow infiltration minimize evaporation losses. Mulching can further reduce evaporation. Under drip irrigation conditions, the soil moisture is saturated only immediately below the dripper, while other parts remain unsaturated. Soil water mainly infiltrates and diffuses through capillary tension. However, if drip irrigation lasts too long, waterlogging may occur below the root system. Therefore, current drip irrigation systems are mostly computer-controlled using advanced technology, although manual operation is also possible.

Error 1: Unreasonable irrigation system. The drip irrigation flow rate is low, and users often cannot see the irrigation process. If the irrigation time is too long, deep percolation will lead to waste; if the irrigation time is too short, the root system will suffer from water stress. Understanding the irrigation system's water application intensity, plant water requirements, and soil field capacity will help better irrigate according to plant needs. Remember that irrigation cycles and amounts should be adjusted according to the climate and different growth stages of the plant; the same irrigation system should not always be used. Error 2: Using the wrong dripper. Drippers are typically of two Models: pressure-compensating and non-pressure-compensating.

4.1 Drip irrigation fertilization is a precise fertilization method that applies fertilizer only to the roots, significantly improving fertilizer utilization efficiency. Compared with conventional fertilization, it can save fertilizer by 30-50% or more; 4.2 It greatly saves labor in fertilization, saving more than 90% compared to traditional fertilization methods. Fertilization is fast, and fertilization of thousands of acres can be completed within one day; 4.3 It allows flexible, convenient, and accurate control of fertilization time and quantity; 4.4 It significantly increases yield and improves quality, enhancing the ability of crops to resist bad weather; 4.5 It allows for the cultivation of crops in marginal soils, such as sandy land, high mountain slopes, and slightly saline-alkali land; 4.6 It is conducive to