The comprehensive index of the tightness of the soil and the condition of the pores is expressed by the bulk density of the soil and has a different bulk density. It directly or indirectly affects the status of soil water and fertilizer, which affects the exertion of fertility and the growth of crops, and is also a high yield of crops. Important limiting factor. Therefore, we conducted a pot experiment on the relationship between density and corn growth. The soil bulk density of the soil can be accurately measured. WeChat sweep to get more professional information: ZYKM Middle speed Printing Slotting Die cutting Corrugated Carton Pizza Printer Machinery,Printer Machinery,Carton Pizza Printer Machinery DONGGUANG CANGHAI PACKING MACHINE CO.,LTD , https://www.xtprintmachine.com
The plant height of corn also decreased with increasing bulk density. Its negative correlation is extremely significant. This is related to poor root development, decreased absorptive function, and poor nutrient conversion and supply during poor ventilation. After analysis of variance, the differences between treatments were significant. Mean treatment 1 and treatment 2 were significantly higher than treatment 3 by 25.8 and 19.4 antelope respectively.
Through the determination of the soil bulk density meter, it was found that the relationship between soil bulk density and corn growth is very close, the bulk density is too large, the soil ventilation is poor, the nutrient conversion and supply are slow, the root system of corn grows slowly, and the absorption function weakens, which affects the above ground The normal growth and development, resulting in reduced biological yield and seed yield. The pot experiment showed that the root weight was significantly negatively correlated with the bulk density within a certain range of bulk density, and the stem height, biological yield, and seed yield were most significantly negatively correlated with the bulk density. When the soil bulk density was 1.14~1.349/cm3, the biological yield, seed yield, and economic coefficient of corn were all higher, especially when the bulk density was 1.149/cm, the roots and shoots of maize were all well developed, and the results were higher. The seed yield. 