| In order to effectively solve the problems of soil salinity and alkali in southern xinjiang and low utilization efficiency of water and fertilizer,it seriously restricts the efficient and sustainable development of fruit and vegetable production in solar greenhouse.Test with leaves,mushroom residue,sawdust and coarse sand,vermiculite as raw materials,according to a certain volume distribution into 10 kinds of formula,coarse sand substrate,for comparison,"the man" in sunlight greenhouse tomato with "snow leopard" thin skin melon substrate cultivation experiment,after mixing matrix is studied physical and chemical properties and its variation,the root zone of environment changes in crop growth period,and the growth of tomato,thin skin melon on the ground and underground,the influence of yield and fruit quality,the comprehensive physical and chemical properties appropriate changes,performance is relatively small,water-saving protecting fertilizer ability,suitable crops is relatively wide,more crops use factors such as accessibility,The compound matrix formula suitable for solar greenhouse cultivation in southern xinjiang was screened and the research results were as follows:The analysis showed that the physical and chemical properties of the remixed matrix were significantly improved,the bulk density and gas-water ratio were significantly lower than that of the coarse sand matrix,and the total porosity was significantly higher than that of CK.The contents of N,P and K in alkaline hydrolysis were significantly increased,and the indexes of fertility and the ability of maintaining fertilizer were significantly enhanced.(2)The remixing matrix improved the buffering performance and water holding capacity of the root zone.The temperature in the root zone of the remixing matrix was significantly better than that of the coarse sand matrix.The average maximum temperature in the root zone increased by 0.28-3.09?,the average minimum temperature increased by 0.04-0.13?,and the daily average temperature increased by 0.18-1?.The average root area water content increased by 1.71-11.20%,the peak water content increased by1.04-18.04%,the low valley value of water content increased by 1.14-10.30%,and the reduction of water content of the remixed matrix lagged behind.(3)The cultivation effect of tomato was significant,and the promotion of plant height and stem coarse growth of the first tomato by the remixed matrix was relatively slow,which was more specifically manifested in that the stem thickness of panicle I was lower than that of coarse sand matrix,and the stem thickness of panicle II,III and IV was higher than that of coarse sand matrix,which was conducive to the improvement of tomato fruit yield and fruit quality in later stage.(4)The thin-skinned melon has a significant effect in the complex mixed substrate culture,which mainly shows that it promotes early seedling growth and helps the plants to quickly meet the growth requirements.The growth effect of plant height and thick stem is better than that of the coarse sand substrate.(5)Of the environmental impact of comprehensive physical and chemical properties,production practiceand the specific needs of thought,T8(coarse sand,vermiculite,mushroom residue: poplar trees: sawdust =2.5:2.5:1:1:3)treatment after mixing matrix,the physical and chemical properties change and meet the demand of crop growth,root zone environmental improvement effect is obvious,can be in the same conditions improve fruit quality,a key production indicators performed best in the two crops,so think it as the experimental study on the best matrix formula. |
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