First, we must break the plow bottom Due to planting for successive years, a plough base layer was formed under the plowing layer of about 25 cm using machinery such as a rotary tiller. The humus in the bottom of the plough has less humus and less porosity, which results in poor soil permeability, poor water permeability, and difficulty in root rooting. Due to the presence of the plough bottom layer, the applied fertilizers are concentrated in about 20 cm of plough layer soil, so that the plough layer soil eutrophication, resulting in soil salinization. Therefore, deep-turning machines such as ploughs, trenchers, deep-drafters, etc. should be used when replacing the rakes. Breaking the bottom layer of the plough allows a more even distribution of the bottom fertilizer, avoiding the eutrophication of the soil surface by a large amount of fertilization, as well as the deep rooting of the root. Second, caution with soil conditioners The soil conditioning agent is mainly based on steel slag phosphate fertilizer, which is a kind of alkaline fertilizer. It has a good improvement effect on acidified soil and can also add calcium and magnesium and other elements. The pH of suitable soil for the growth of vegetables is mostly 6 to 7.5, so soil conditioners should be used according to the actual conditions of the soil. If alkaline fertilizers are continuously used in calcareous soils exhibiting weak alkalinity, alkalization of the soil will inevitably occur. If nitrogen fertilizers are used excessively in alkaline soils, large quantities of ammonia gas will be easily generated, resulting in gas hazards. Three, ditch Shi, points Shi manure should be cautious When the vegetables are changed, the best base fertilizer application method is to use the entire shed and deep plowing, such as the use of ditch, hole fertilizer material should pay attention to fertilization method. The first is that the fertilization and apical fertilization materials must maintain a certain distance from the root system. Do not use the fertilizer directly under the root system, although the nutrient concentration is not conducive to the root system. Followed by the selection of fertilizers for ditch application and hole application. Manure must be completely decomposed to avoid fermenting and degrading the roots in the soil. Cervical Ripening Balloon,cervical dilation Catheter,Silicone Cervical Ripening Balloon,Silicone Cerivcal Dilation Catheter Anesthesia Medical Co., Ltd. , https://www.jssinoanesthesia.com
Pre-fermentation Fertilization Recommendations for Vegetables
Spring and summer vegetables for summer vegetables, and many adverse environments, so there are many problems after the change. Due to continuous planting and large amount of fertilization, soil eutrophication is serious in greenhouses, and some vegetable farmers are not allowed to purchase fertilizers and fertilization methods, resulting in changes in soil physical properties and adverse effects on vegetable growth. Here are some suggestions for giving fertilizer to vegetable farmers before changing vegetables: