Tea garden watering irrigation in tea gardens is beneficial to improve soil moisture conditions and community climatic conditions, increase soil moisture content and relative humidity in the air, reduce soil and air temperature, help to promote the tea tree metabolism and enhance the tea tree root nutrient absorption, is conducive to Improve tea quality and increase tea production. Studies have shown that during the growing season of tea plants, when the soil moisture content and relative humidity of the air are between 80% and 90%, the growth rate and growth of the tea tree are the best, the plant growth is strong, the shoot growth is large, the tenderness is strong, and the tea yield is high. High and excellent quality; when it drops to 30%, the growth activity is completely stopped, the buds are withered and dry gradually, and the whole plant dies. Therefore, when it was discovered that there was no dew on the leaves of the tea leaves in the morning and the leaves were dull, the leaves touched and rattled, indicating that the soil moisture in the tea garden had dropped to a very low level. The tea trees were already deprived of water and the water should be taken shortly to ensure the high temperature and dry season of the tea. Balanced production increase. Tea garden water supply methods include irrigation, flow irrigation, sprinkler irrigation, drip irrigation, infiltration irrigation and fog irrigation, etc., through the irrigation to achieve the normal growth and development of tea tree and increase production purposes. Considering comprehensive factors, spray irrigation and fog irrigation have the best effect, drip irrigation and infiltration irrigation are the second, irrigation and irrigation are the worst; if water conservation is taken into account, the amount of water used for drip irrigation and infiltration is the least, followed by fog irrigation and irrigation. Flow irrigation and irrigation water consumption is the largest. Therefore, localities should adopt different methods of water supply according to local conditions to achieve drought resistance and drought prevention, and to achieve high yield, high quality, high efficiency, and low consumption of tea. The grass planting of tea gardens in the tea gardens can stabilize the soil thermal changes, reduce the evaporation of surface moisture, prevent or reduce the drought and heat damage of tea trees, and secondly, it can slow the surface runoff speed, prevent or reduce the erosion of the soil, and promote the deep penetration of rainwater into the soil. , Increase soil water storage, increase soil moisture content, play a role in soil conservation, water conservation, and fertilizer maintenance; Third, increase soil organic nutrients, maintain soil looseness, inhibit weed growth, and help improve tea quality and increase tea yield. It is best to lay all the gaps in the tea plantations on the tea garden with grass. The principle is not to see the soil after the grass is planted. It is required that the thickness of the grass should be between 8-10 cm. The grass should not be carried with grass seeds or straw without pests. Green manure, bean stalks, mountain grass, straw, bagasse, etc. are good. For the first time, the grass-dressing time should be carried out after the end of spring tea picking, tillage weeding and fertilization, and from late May to early June before the onset of the dry season; the second time after the end of summer tea picking and weeding and weeding and fertilization 7- In August. The amount of grass per acre should be between 1500-2000 kg. After the grass is planted, in order to prevent the fodder from being washed away by heavy rain or blown away by strong wind, it is appropriate to cover it with clods. Intercropping green manure intercropping green manure can not only increase soil organic nutrient content, improve soil structure, but also increase the green coverage among tea plantations, reduce soil exposure, reduce surface runoff velocity, increase the amount of rainwater infiltration into soil depth, and reduce water and soil fertility. Loss, to achieve the purpose of tea production and quality. According to the study, summer green manure was interplanted between young tea plantations, and between planted tea plants and unplanted tea plantations, the soil temperature decreased by an average of 10°C-15°C from July to September, greatly reducing the damage rate of tea seedlings. Therefore, summer green manure should be planted in tea gardens that are not covered with grass, especially in young tea gardens. Summer green manure should choose stalk high, leaf sparse, branches were umbrella-like peanuts, soybeans, mung beans, pigeonpea, peas, etc. is better. Tillage, water conservation and timely cultivating can not only effectively reduce the direct evaporative loss of soil moisture, but also reduce the consumption of soil moisture by weeds. Tillage time should be carried out after the rain is moist and the topsoil should be cultivated. It should not be carried out under severe dry seasons and low soil moisture content. Otherwise, it will affect water absorption due to cultivating and injuring roots, which will increase the water shortage of plants, especially The cultivation of young tea gardens should pay attention. When cultivating, damage to the roots of the tea tree should be minimized. The depth of cultivation should be between 8 and 10 cm, and it should be carried out at a distance of 30 cm from the plant. The weeds around the plants should be removed by hand or eradicated with a rake so as not to injure the tea tree. During weeding, the weeds should be rooted off, and weeds should be used to break the weeds' heads of mud. After drying, we spread them around the tea plant. The high-temperature, dry period dressing outside the roots is not only the period when the tea tree needs the largest amount of water, but also the peak period of the occurrence of diseases and insect pests. In this period, the combined application of top dressing and extermination of insects is an integrated tea garden management technical measure. It can not only improve the climatic conditions of the tea garden community, but also increase the absorption of water and nutrients by tea leaves, and can also achieve pest control and treatment. purpose. Due to the high temperature during this period, the light is strong and the water evaporates quickly. The concentration of top dressing outside the roots should be low, and the amount of pesticides should be reduced to avoid burning the tea tree. The best time to choose is to work best in cloudy and sunny mornings and evenings. Reasonable picking due to poor quality of shoots during the dry season, many tea farmers adopt "less mining, rough mining, old mining" tea picking methods, resulting in too many tea tree crown leaves, increased tea tree consumption of water and nutrients, easy to cause tea Water shortage affects normal growth and development. On the contrary, if “small mining, strong mining, and partial tender mining†are adopted, it will lead to too few new leaves of the tea tree and affect normal photosynthesis, resulting in reduced tea yield and reduced quality. Therefore, the principle of timely picking and batch picking should be implemented in the tea picking in this period. The method of picking 1 leaf or 1 leaf or 1 leaf and 3 leaves for harvesting 1 leaf of true leaves or left leaves for harvesting should be adopted. Drought resistance also benefits tea production and quality. China Agricultural Network Editor
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