However, excessive aeration will make the decomposition rate of organic matter too fast and reduce the amount of humus in the soil, which is not conducive to the long-term supply of nutrients(plastic nursery pots wholesale suppliers sri lanka). Some of them can diffuse to the atmosphere near the ground and be absorbed by plant leaves during photosynthesis, and some can be directly absorbed by roots.
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When there is too little water, plants will be threatened by drought and lack of nutrition(200 cell seedling trays wholesale); Too much water will make the air circulation in the soil blocked and the loss of nutrients, so as to reduce soil fertility, or incomplete decomposition of organic matter and produce some reducing substances harmful to plants(4.5inch square nursery pots). The soil with granular structure is a soil with good structure, no structure or poor structure(plastic nursery pots wholesale suppliers sri lanka).
Sandy soil mainly consists of coarse sand and fine sand, with small silt and clay density, small soil viscosity, many pores, strong ventilation and permeability, poor water storage and fertilizer retention performance, and easy to drought(plastic nursery pots wholesale suppliers sri lanka). Rotation is difficult, resulting in different soil characteristics from open field(98 cell plug trays). However, in poorly ventilated soil, the concentration of C2 can often reach 10% ~ 15%.
The long-term excessive use of chemical fertilizer(200 cell seed trays wholesale), in protected cultivation (especially greenhouse and plastic greenhouse), due to the higher temperature and humidity than the open ground, the rain can not pour on the ground. Poor soil aeration will inhibit aerobic microorganisms, slow down the decomposition activity of organic matter(4.5inch deep square pots), and reduce the available nutrients for plants(plastic nursery pots wholesale suppliers sri lanka).
The activities of microorganisms and animals in the soil are inhibited, and the soil fertility is poor, which is not conducive to the rooting and growth of plant roots(plastic nursery pots wholesale suppliers sri lanka). Please refer to the corresponding questions for soil temperature and soil moisture(rootmaker propagation trays). The further increase of CO2 will have a toxic effect on plants, destroy the respiratory function of roots, and even lead to suffocation and death of plants(injection molded nursery pots).
This is not conducive to the development of plant roots and seed germination(5 gallon nursery pots bulk). In the case of soil hardening, ponding and poor air permeability, it can be reduced to less than 10%, which will inhibit the respiration of plant roots and affect the physiological function of plants(plastic nursery pots wholesale suppliers sri lanka). Applying chemical fertilizer is an important measure to improve agricultural production, including greenhouse vegetable production.
Generally, the suitable root temperature for crop growth is 15 ~ 25 ℃, and the critical minimum and maximum allowable values are about 12 ~ 13 ℃ and 28 ~ 30 ℃(plastic nursery pots wholesale suppliers sri lanka). Soil texture and structure are closely related to soil moisture, air and temperature conditions(polystyrene plug plant trays). The content of C2 in the soil air is dozens to hundreds of times higher than that in the atmosphere, and it is about 0.1% in the well drained soil.
Do not understand the facility soil environment(blow molded nursery pots), or do not pay attention to soil fertility and soil utilization, blindly over fertilization and medication, resulting in the deterioration of the soil environment, the accumulation of salt ions in the soil, and the concentration exceeding the tolerance range of vegetable crops(nursery tray manufacturers), resulting in yield reduction, product pollution and even no harvest(plastic nursery pots wholesale suppliers sri lanka).
It is also reported that the C2 solid granular fertilizer developed by Henan Agricultural University in my country can produce C2 by just putting it in a bucket filled with water and stirring(plastic nursery pots wholesale suppliers sri lanka). Clay-like soil is mainly silt and clay, with heavy texture, dense structure, strong water and fertilizer retention capacity, but small pores, poor ventilation and water permeability, sticky when wet, and hard when dry(3 gallon nursery pots bulk).
The fertile soil can also meet the requirements of plants for water, fertilizer, gas and heat(sureroot plug trays bulk). It is the basis for the normal growth and development of plants. Soil is a three-phase system composed of solid, liquid and gas. Solid particles are the material basis of the soil, accounting for more than 85% of the total weight of the soil(plastic nursery pots wholesale suppliers sri lanka). The combined percentage of these solid particles of different sizes is called soil texture.
Because the above-mentioned fertilizers will evaporate ammonia gas(long life propagation trays), if the amount of ammonia gas is too large, untimely ventilation will cause ammonia poisoning and damage to leaves and roots, which will greatly reduce production. Soil structure refers to the arrangement of solid particles, the number, size and stability of pores and aggregates(2 gallon nursery pots bulk). The soil is solid, with poor ventilation and permeability(plastic nursery pots wholesale suppliers sri lanka).
It provides nutrients and water necessary for plant life, and is an important place for material and energy exchange in the ecosystem(plastic nursery pots wholesale suppliers sri lanka). Loamy soil has a relatively uniform texture, in which sand, silt and clay have roughly the same proportions. They are ideal agricultural soils(72 cell plug trays). They are neither loose nor sticky, have good aeration and water permeability, and have a certain ability to retain water and fertilizer.
Soil is the loose surface layer on the surface of the lithosphere and is the substrate for the life of terrestrial plants(72 cell plug trays supplier). Soil texture can be divided into three categories: sand, loam and clay(plastic nursery pots wholesale suppliers sri lanka). According to the size of solid particles, soil particles can be divided into the following levels(wholesale nursery supplies plastic pots): coarse sand (2.0~0.2 mm in diameter), fine sand (0.2~0.02 mm), silt sand (0.02~0.002 mm) and clay particles (less than 0.002 mm) ).
It can be divided into micro-aggregate structure (less than 0.25 mm in diameter), agglomerate structure (0.25-10 mm) and various structures larger than the agglomerate structure(1 gallon nursery pots bulk). The aggregate structure is that the humus in the soil binds the mineral soil particles into small clumps with a diameter of 0.25 to 10 mm, which has the characteristics of water stability that does not disperse in water(plastic nursery pots wholesale suppliers sri lanka).
It can coordinate the relationship between water, air and nutrients in the soil(128 cell seed trays wholesale), unify the contradiction between fertilizer preservation and fertilizer supply, and is conducive to root activity and absorption of water and nutrients, providing good conditions for plant growth and development(plastic nursery pots wholesale suppliers sri lanka). The soil environment of greenhouse mainly includes soil temperature, soil moisture, soil ventilation, soil salt content and soil pH(nursery plant pots wholesale).
Soil moisture can be directly absorbed by plant roots(plastic nursery pots wholesale suppliers sri lanka). The appropriate increase in soil moisture is conducive to the dissolution and movement of various nutrients, the hydrolysis of phosphate and the mineralization of organic phosphorus, which can improve the nutritional status of plants(32 cell seedling trays wholesale). Soil moisture can also regulate soil temperature, but too much or too little water will affect plant growth.