| Tomato is an important crop in the cultivation of vegetable cultivation.It is also a crop that is sensitive to soil moisture and oxygen stress.In the cultivation of the soil,soil compaction is easily caused by improper management of water and fertilizer in the field,and the air in the soil pores is reduced,which cannot satisfy the tomato.The demand for oxygen in the roots causes the growth of crop roots to be hindered,which affects the yield and quality of the crop.In order to improve the permeability of soil in tomato root zone,physical perforation combined with precise drip irrigation was used to study the effects of different perforation treatments on tomato growth and soil environment,and provide scientific basis for improving tomato quality and efficiency.The test was set to 10 treatments according to different pore sizes and pore depths,respectively LA(pore size 4 cm-pore depth 15 cm),LB(pore size 4 cm-pore depth 20 cm),LC(pore size 4 cm-pore depth 25 cm),MA(pore size 6cm-hole depth 15cm),MB(pore size 6cm-hole depth 20cm),MC(pore size 6cm-hole depth 25cm),HA(pore size 8.5cm-hole depth 15cm),HB(pore size 8.5cm-hole depth 20cm)HC(pore diameter 8.5cm-pore depth 25cm),CK(no perforation),the effects of different perforation treatments on tomato plant growth,yield and quality,and soil environment and water use efficiency in solar greenhouse were studied.Get the following results:(1)Soil perforation treatment in tomato root zone has obvious promoting effect on plant growth.The plant height of tomato treated with MA(6cm-15cm)increased by 9.08%-17.77%compared with the control;the stem diameter increased by 12.69%?18.34%compared with the control;the root activity and root volume increased by 12.5%and 26.15%respectively during the seedling stage;chlorophyll content Compared with the control,the root vigor and root volume of tomato treatment increased by 12.82%and 17.33%,respectively.(2)Soil perforation treatment in tomato root zone has great influence on rhizosphere soil enzyme activity and microorganisms.The soil urease and catalase activities of MA(6cm-15cm)increased by 16.88%-58.85%and 30.43%? 96.08%,respectively.The number of soil bacteria,fungi and actinomycetes increased by 51.14%?88.33 compared with the control.%,63.33%to 91.08%,0.94%to 90.91%.Different perforation treatments could increase the soil respiration rate and soil temperature of tomato.The soil respiration rate of MA(6cm-15 cm)increased by 15.49%-52.56%compared with the control,and the soil temperature increased by 0.9??2? compared with the control.(3)Soil perforation treatment in tomato root zone was beneficial to increase yield and quality.The yield of tomato and soluble protein was the highest in MA(6cm-15cm)treatment,which increased by 13.66%and 31.49%,respectively,compared with control,HA(8.5cm-15cm).The content of Vc and soluble sugar were the highest,which was 38.49%and 16.67%higher than that of the control.The root zone punching combined with precision drip irrigation increased the water use efficiency by 11.71%.This experimental study shows that soil perforation through the root zone can increase soil permeability,promote tomato plant growth,improve root zone soil environment,improve fruit quality and yield,and combine precision drip irrigation to improve water use efficiency.Preliminary analysis shows that the perforation and ventilation of the pore size of 6cm and the pore depth of 15cm(MA treatment),the regulation of soil water and gas technology has a better promoting effect on tomato growth and development. |
PDF Full Text Request