PD Toys plastic Co., Ltd is OEM & ODM manufacturer of inflatable products in the mainland of China with more 17 years of manufacturing experience. products ranges are Inflatable Toys, inflatable pools, inflatable pool floats, towable tubes, Air Furniture and Promotional Items etc. total have more than 1500 employees (4 factories) related to PVC inflatable products.
Operated under ISO 9001:2015 management system, We had passed factory Audit by Walmart, Taret, Disney ect, also passed all necessary certificates and testing such as ICTI, BSCI, SEMTA,Target FA, NBC Universal, FCCA, SGS, CVS Security, GSV, Disney FAMA ect. We have our own PVC raw materials manufacturing company, all the PVC we produced are compliance with European EN71, American ASTM standard and NON PHTHALATE (6P) standard.
Inflatable Kickboard,Inflatable Swimming Kickboard,Swimming Kickboard,Inflatable Surfboard P&D Plastic Manufacture Co., Ltd , https://www.pdinflatable.com
The southern part of the country is located in arid areas. The irrigation technology of fruit trees is backward and the management is extensive. On the one hand, water resources are wasted. On the other hand, the quality of fruits is poor and the benefits are low. This has seriously hindered the development of the forest and fruit industries and urgently required the development of suitable southern orchards. Agronomic water saving measures. At present, there are few reports about the coverage of orchard coverage in southern Xinjiang. Sun Xia and Chen Wenyan have studied soil physicochemical properties under different soil management measures in Nanjiang pear orchard, and they have been applied to different coverage measures in southern Xinjiang orchards, especially apricot orchards. The study of changes in soil moisture and temperature has not been reported. In this paper, through field experiments, the characteristics of soil water storage and soil temperature changes after the plastic film covering measures and forage covering measures in apricot gardens in southern Xinjiang were studied to provide a theoretical basis for exploring the agronomic water saving measures suitable for the southern Xingyuan Garden. Technical Support.
The effect of the cover measures on soil temperature is mainly reflected in the fact that, through physical cover, the heat exchange capacity between the soil surface and the atmosphere is reduced, thereby improving the soil thermal conditions. Taking the surface soil as an example, the diurnal variation characteristics of soil temperature at different depths of 5 cm were shown. It can be seen that the plastic film covering treatment has a better temperature-increasing effect than that of the straw covering treatment, and the plastic film covering treatment is better than the straw covering treatment. The average daily soil temperature was higher by 29% at a depth of 5 cm in the surface layer, mainly because the sealability of the plastic film was much better than that of the straw curtain.
Compared with the non-coverage treatment, the coverage of the apricot orchard soil can be significantly improved by the portable soil moisture temperature quick-measuring instrument. The plastic film covering treatment has better water storage and retention capacity than the draught covering water storage. With regard to the conservation capacity, its conservation capacity is increased by about 30% and about 10%, respectively, compared with soil conservation capacity without treatment. The physical properties of the soil include water, heat, and gas. The plastic film covering treatment has better water retention and heat retention than the grass curtain covering treatment. Relatively speaking, its permeability is poor, and the plant is in the soil water, heat, and gas. Growing under the influence of the integrated environment, therefore, coverage measures should be selected for the suitable growing environment of crops or fruit trees. In addition, for the extreme arid climate conditions, what kind of cover measures and cover measures have influence on the growth of apricot trees, such as in different soil materials underground, after the use of covering the soil air permeability, soil microorganisms, etc., and then on the development The impact has yet to be further studied.
Application of Portable Soil Moisture Temperature Tester in Farmland Water Saving Measures
The main purpose of the farmland water saving measures is to reduce the inefficient use of water between soil evaporation through the implementation of scientific irrigation models and various agricultural water conservation measures. Agronomic measures are set on the surface of the soil by a physical barrier layer that prevents and slows the exchange of energy between water and soil and the atmosphere, thereby altering the interface between layers of soil and atmospheric conditions, improving soil water, fertilizer, gas, and heat conditions. Coverage protection is widely used in agricultural water-saving measures in North China. In recent years, research reports on the coverage of orchard cover measures have focused on the effect of cover measures on soil moisture, temperature, structure, soil enzyme activity and fertility in orchards. A large number of studies have concluded that cover measures can effectively inhibit the evaporation of ineffective soil surface, increasing Orchard soil water use efficiency, soil fertility increased significantly, but the coverage measures are not the same in different regions. Portable soil moisture temperature measuring instrument has irreplaceable advantages in determining the soil water and heat parameters in orchards.