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Citrus Garden: Is it better to install sprinkler irrigation or drip irrigation?

来自: 成都鑫芯电子科技有限公司 浏览次数:1771 2018-09-05From : Chengdu Xinxin Electronic Technology Co., Ltd.

In the past 5 years, due to the influx of large amounts of funds and the habitual follow-up of each other, the hot wind of citrus planting has swept the whole of Guangxi. The citrus planting area in Guangxi has grown geometrically almost every year, and currently has more than 6 million mu. However, some people who follow the trend of planting citrus are not able to manage their orchards well because of lack of technology. The money they throw in is not proportional to the output of citrus and it is difficult to recover. However, it is difficult to hire people to work, the aging and feminization of workers is serious, and the low efficiency of workers also seriously restricts the development of the citrus industry in Guangxi. Intensive, large-scale , mechanization has become a path that citrus will take in the future, so the application of water and fertilizer integration technology on citrus has become an urgent matter.


In the narrow sense of technology, the integration of water and fertilizer is to dissolve fertilizer in irrigation water and deliver it to each crop in the field through irrigation pipes to meet the needs of crop growth and development. In a broad sense, the fertilizer is dissolved and applied in a variety of ways, including spraying, watering, and fertigation. Compared with conventional fertilization, the integrated water and fertilizer technology has the advantages of saving labor, increasing fertilizer utilization, being flexible and convenient, accurately controlling fertilizers, improving soil conditions, and saving water . Water and fertilizer integrated irrigation and fertilization technologies include sprinkler irrigation, micro-sprinkler irrigation, and drip irrigation. So, citrus gardens: spray irrigation or drip irrigation?

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Citrus sprinkler

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Citrus Drip Irrigation


First, let's start with the nutrition of citrus. We know that the root is the vegetative organ of the plant. It is responsible for absorbing water in the soil and dissolving the inorganic salts in it, and has the role of supporting, reproducing, and storing synthetic organic substances. The growth and development of citrus and the fruits required for flowering and fruiting are more than 80% It is absorbed by the root system, and the main part of the root system to absorb nutrients is capillary roots. Citrus is a shallow root crop. The root depth is generally about 10 cm to 40 cm and the width is generally near the periphery of the drip line. Therefore, how to properly apply fertilizer and water in this range is the key to citrus leafy.


Sprinkler irrigation is an irrigation method in which water with a certain pressure is sprayed into the air with the help of pumps and pipe systems or by using the drop in natural water sources, which is dispersed into small droplets or forms a mist to land on plants and the ground. It has the advantages of water-saving and fertilizer control. . However, the water droplets sprayed by the sprinkler are greatly affected by the wind during the process of falling to the ground, which affects the uniformity of the irrigation water. The water droplets are easy to evaporate and are seriously lost. The spray irrigation also has the disadvantages of wet surface and insufficient deep moisture. It is easy to breed weeds and waste water and fertilizer resources. Runoff is easily formed on the ground surface, causing potholes and causing land consolidation.


Drip irrigation is a method of local irrigation that uses specialized irrigation equipment to turn a pressurized stream of water into water droplets to moisten the vicinity of the roots of a crop. Drip irrigation can save water, control nutrients to stay in the root zone to the greatest extent, and spread water and fertilizer horizontally and evenly. Water and fertilizer quickly penetrate the main distribution layer of the root system through mass flow and diffusion. The utilization rate of water and fertilizer is improved, and no runoff is generated on the ground surface, which is not easy to cause land consolidation.

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Orange trees with drip irrigation have very developed capillary roots

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Orange trees with drip irrigation have very developed capillary roots

       Second, let's start with the pests and diseases of citrus. We all know that common diseases and insect pests of citrus include melanosis, yellow dragon disease, ulcer disease, and red spider disease, and citrus growers are most afraid of ulcer disease. Citrus ulcer disease is the object of plant quarantine at home and abroad. The pathogen is a bacterium. The disease harms citrus leaves, shoots and fruits. The pathogenic bacteria overwinter in the tissue of the citrus disease department. When the temperature and humidity are high in the following year, the bacteria overflow from the disease department, and the whole orchard is endangered by wind and rain. The disease resistance of different citrus varieties is significantly different. Among them, kumquat and citron have the highest disease resistance, and the appropriate disease temperature is 25-30 ° C. The water on the leaf surface is very conducive to disease. Trees with wounds are also easily infected.


Sprinkler irrigation sprays water into the air, spreads into small droplets or forms a mist to land on plants and the ground. When citrus is spray-irrigated, moisture attached to the surface of the leaves can easily cause ulcers. The water from the sprinkler is evaporated, so that the local environment around the sprinkler (especially the more closed fruit rows) shows high temperature and high humidity, which further strengthens the spread of ulcer disease. Water droplets dripping onto the ground will also splash mud water to the graft. The spread of soil-borne diseases is strengthened on the wounds and lower leaves, which is the same as that of citrus which is easy to get sick after hot and rainy weather.


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Drip irrigation is slowly immersed into the ground through water droplets, and the amount of evaporation is small, which will not cause the phenomenon of local high temperature and humidity, and also reduce the spread of soil-borne diseases. It can also dissolve pesticides in drip irrigation liquid to prevent soil-borne diseases from the citrus root system. infection.


Finally, on the whole, drip irrigation and fertilization is an ideal fertilization and irrigation method for citrus planting , which truly achieves the goals of water, fertilizer, labor, and disease prevention. It is believed that by installing drip irrigation, citrus orchards can achieve high yields, more Good quality and better economic benefits.


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Drip-irrigated citrus orchard with strong and uniform trees



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