Investigation On The Status Of Protected Vegetable Fertilizer Application And Soil Fertilizer In Liaoning Province

Vegetable facilities in northeast China are mainly carried out in solar greenhouses,which are a type of facilities with independent property rights in China,because the winter temperatures in northern China are relatively low.The characteristics of overwintering fruit and vegetables can be achieved without extra heating in solar greenhouse,and the yield and income of crops in northern region are increased,so it is widely used.The special structure of solar greenhouse makes it have good thermal insulation and heat storage performance.Compared with traditional heating greenhouse,it saves a lot of non-renewable energy.Therefore,it has become an important means for China's facility horticultural industry to break through the bottleneck of resources and environment and maintain the effective supply of vegetable basket products for a long time.In recent years,it has also caused the international establishment.The horticultural researchers attach great importance to it.Based on the soil types and vegetable production conditions in Liaoning Province,this paper investigates the typical areas of protected vegetable production in Liaoning Province,mainly through the distribution of questionnaires and field research on fertilizer use.The soil samples in the facility were collected,the sampling depth was 0?20 cm,and each soil sample was mixed with multiple soil samples.A total of 300 soil samples were collected for soil fertility analysis.The main results are as follows:1.Most of the producers in the vegetable production areas pay more attention to the application of organic fertilizer.Almost every crop has to apply organic fertilizer before planting or transplanting.However,the index of multiple cropping is different in different production areas.The application amount of organic fertilizer varies greatly in different production areas.2.In most of the facility production areas,there are many varieties of inorganic chemical fertilizers applied,the composition is complex,the producers have no standard when they are selected,and the phenomenon of excessive blind application still exists.In addition,because of the multiple cropping index in different production areas,the varieties of crops are different.The amount of inorganic fertilizer applied in different production areas is also different.3.The average soil fertility of protected vegetables in Liaoning is good:the average value of p H is about 5.90,The average value of organic matter is 22.80mg·kg^-1,conductivity is 383?S/cm,the average of soil total nitrogen is 1.40g·kg^-1,total phosphorus is 1.57g·kg^-1,total potassium is the average value of 25.91g·kg^-1,soil alkali hydrolyzed nitrogen is160.33mg·kg^-1,available phosphorus average 108.66mg·kg^-1,available potassium average is4.98.02mg·kg^-1,available molybdenum average 0.22mg·kg^-1,average effective boron1.37mg·kg^-1,effective iron average 60.05mg·kg^-1,available manganese average14.21mg·kg^-1,effective copper average 4.74mg·kg^-1,effective zinc average 12.49mg·kg^-1.