“ the same nutrient supply of different crops, the yield and quality of the difference will be very large, precision fertilization fertilizer integration is in the premise of high efficiency and low cost, just enough to make crops full enough without waste. ” China Agricultural University, plant nutrition expert Li Zhonghua summarized the technical advantages of the integration of water and fertilizer to the trainees.  
In order to increase the integration of water and fertilizer technology promotion efforts, in September 2nd, the Dongguan Municipal Agricultural Office in Dongkeng goods raw farm held a fertilizer integration technology training exchange. From 8, Zhen Dong Keng bridge, Dasan surrounding street family farmers, large professional technicians and about 40 people to participate in learning and communication.  
The integration of water and fertilizer can make crops just “ full ”  
Li Zhonghua teacher described in detail the principle of plant nutrition absorption, approach, and the effect of water and fertilizer integration and the effect of ordinary fertilization. He pointed out that the integration of water and fertilizer technology has the characteristics of water saving, labor saving, high efficiency and so on, which can be easily formulated fertilization, effectively improve the yield and quality of agricultural products. In the actual operation, the water soluble fertilizer is dissolved in the irrigation water, and the pressure system is transported to the root zone of each crop by the pipeline.  
Li said that compared to traditional fertilization, water and fertilizer integration is the dominant advantage of controllable pipe system. According to the user with a good crop fertilizer solution, may at any time, with the amount of fertilizer to crop water supply, convenient and efficient. When used, he suggested that farmers use “ a small number of times ” fertilization methods, so that crops have been in just “ full ” state. &ldquo &lsquo ’ crop; hungry; certainly because of lack of nutrition and growth has been restrained, but full of ‘ ’ is not necessarily good, don't waste, soil nutrient enrichment will lead to the surrounding high weeds. Weeds next to crops can not be used herbicides, artificial weeding that cost can be imagined. ” Li explained.  
A simple method for measuring soil nutrients  
How to avoid water shortage or excessive irrigation? Li Zhonghua in the field of communication, for students to demonstrate the use of soil EC meter simple soil measurement method. “ at first, the soil EC value is 0.3, indicating that the lack of nutrients, we add a little water soluble fertilizer, now changed to 1.6, is the normal range. ” “ the values measured by soil EC meter should be compared with the EC values of various crops, because the soil nutrient requirements of different crops are different. ” Mr. Li added.  
In addition, Mr. Li and technicians also explained the use of water and fertilizer integration equipment and rational use of water soluble fertilizer matters, and on-site answers to the technical questions of the trainees. Municipal Agricultural Office Technician said, through the organization of training, seminars, on-site observation and other forms of Dongguan in recent years has been committed to the promotion of integrated fertilizer technology, and professional large family farmers, new agricultural business entities, and willing to accept the application of new technology, is the main force in the promotion.