As the temperature in the spring rises, the growth rate of crops increases, and the amount of water needed for fertilizer needs to increase. Especially for the vegetables in the fruiting period, it is necessary to strengthen the management of fertilizer and water to meet the requirements of fertilizer and water.
   However, strengthening fertilizer management does not mean a large amount of fertilizer at a time, but a continuous, long-term management measure.
   First of all, we must pay attention to the method of flushing. According to the current weather conditions, the application of drip in the ditch or under the intima is the most suitable method of flushing. After fertilization, the nutrients directly enter the main distribution area of ​​the roots with water, and the crops are absorbed and utilized rapidly.
   Secondly, it is necessary to select suitable fertilizers, such as compound fertilizers, which have good quick-acting properties. Although they can quickly meet the nutrients needed for rapid growth of vegetables, they can easily cause root damage and are not conducive to the growth of roots. Although it is conducive to expanding the area of ​​roots to absorb nutrients, it is not conducive to the concentrated supply of nutrients. You can choose about 10 kg per acre of fully water-soluble fertilizer . According to the proportion of crops required for fertilizer, the corresponding compound fertilizer can be selected for use with biological fertilizer.
   Again, the amount of fertilizer should not be too large. Watering should be appropriate and the concentration should be adapted. Under certain conditions of fertilizer concentration, insufficient watering and shallow fertilization depth are not conducive to absorption and utilization, and may even cause roots to float. And the number of times of fertilization should not be too much. The growth of crop roots always extends in the direction of fertilizer, and fertilization and fertilization are applied to the soil surface, which is unfavorable for root system and affects the development of roots. The surface roots are also susceptible to salt damage, which affects the roots to absorb nutrients and water. It can be used in combination with various topdressing methods such as fertilizer and fertilizer.
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