Autumn stubble vegetable late lids are more suitable

作者： 泽惠农业 时间：2023-04-05 10:16:52 阅读：68

Autumn stubble vegetable late lids are more suitable
     The general application of ground membrane covered in vegetable production has played a good auxiliary role. After the autumn stubble vegetables were planted, many vegetable farmers covered the ground membrane early, fearing that the seedlings would be inconvenient to operate. However, premature coverage of ground membrane is not conducive to vegetable growth.
     Why is it suitable for the autumn stubble vegetable floor? This also starts with the main role of the ground membrane. The ground membrane has three main functions: First, to improve the temperature. The ground membrane has good insulation. According to the determination, the sedium covered in winter is 2-5 degrees Celsius higher than the open field cultivation. Winter temperature is one of the most important factors that affect vegetable growth, and the effect of improving ground temperature on promoting vegetable growth is very obvious. The second is water preservation and fertilizer. The mulch is not transparent, which can reduce the evaporation of the surface water to a very low level. Especially for winter sheds, the large air humidity in the shed is the main cause of diseases. Covering the ground film is reduced to the surface water evaporation, which reduces the relative humidity of the air, which is conducive to controlling the occurrence of diseases. Watering is not convenient to water in areas and in winter, and the coverage can be significantly increased in yield. Third, grass extinguish, disease -proof insects, salt suppressing seedlings, etc. (grass destruction mainly refers to black ground membranes). For example, the use of black ground membranes in watermelon planting is mainly for weeding.
     For a period of time after the autumn stubble vegetables have just been planted, the main role of the caniris can not only be played in the early autumn, but it is even not good for the growth and development of vegetables. During the stubble vegetable planting stage, the ground is warm. The surface temperature at noon on a sunny day can even exceed 40 degrees Celsius. The heat after covering the ground film is difficult to disperse, and the surface temperature is higher, which is not conducive to root growth. The water preservation makes the surface humidity high, which is not conducive to the deep tie. The ventilation conditions in the early autumn shed are good, and there is no need to consider the effects of humidity and other effects on vegetable growth.
     The non -coated environment is more conducive to the growth of autumn stubble vegetables. Do not cover the ground, the surface is dry and fast, which is conducive to squat seedlings. Moderate drought on the surface can promote the root system of the seedlings and establish a good root -based structure; it can inhibit long -term, promote strong plant growth, and improve the resistance of plants. Moderate cultivation after the planting of vegetables can improve soil permeability, promote the conversion and decomposition after the application of the base fertilizer, and the root system grows strong.
     Covering the ground membrane is very important, but the less the ground film is as soon as possible, and the appropriate choice during the period can better play the advantages of the galmic membrane. Different vegetables are also suitable for covering the film. Under normal circumstances, when the vegetables are slow, but before entering the rapid growth period, the plants are smaller and suitable for lids when the membrane operation. For example, cucumber that grows fast is appropriate for 10-15 days after planting. This is not only conducive to the growth of vegetables after planting, nor does it affect the development of vegetables after the later temperature decreases.