In recent years, the area of ​​professional vegetable production areas in China has continued to expand. Due to the high economic benefits of vegetable fields, farmers have increased the use of fertilizers during the investment process. However, in order to ensure the high yield, stable production and sustainable development of the vegetable fields, it is necessary to prevent the soil from deteriorating and adopt rational fertilization techniques that overcome or alleviate soil salinization and continuous cropping obstacles.
First, increase the organic fertilizer: to apply more organic cellulose with high ratio of carbon to nitrogen, in order to enhance the soil buffer capacity, prevent the accumulation of salt and delay the process of soil salinization.
Second, scientific monitoring: using soil testing instruments to measure the concentration of soil solution. When the concentration was found to exceed the standard, the fertilizer formula was scientifically and reasonably adjusted, and watering and other measures were taken to alleviate it.
Third, deep plowing of the soil: After the Vegetables are harvested, plunge the soil deeper and turn the topsoil rich in salt to the lower layer, turn the lower layer of soil with relatively low salinity, and reduce the salt damage.
Fourth, salt and salt wash: after harvesting, the vegetables will be replaced with ramming gaps to remove the film, water or rain and eliminate the effect of soil salinization.
Fifth, the deep fat base skillful dressing: basic fertilizer to deepen, top dressing to "eat more meals." It is advisable to use fertilizer and organic fertilizers in combination and then plow. Top dressing should strictly control the amount of fertilizer.
Sixth, the top-dressing fertilizer should adopt the combination of organic fertilizer and chemical fertilizer, combination of fertilization and compound fertilizer, and the combination of quick-effect and slow-effect, and rationally use the three measures of flushing, hole application and foliar spraying. .
Seventh, ground cover: Covering the ground with a mulch or wheat straw (or straw) can achieve the obvious effect of suppressing salt accumulation on the soil surface.
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