Research On The Effect Of Rice Quality And Soil Property Based On The As, Pb, F Concentration Change

In recent years, with the rapid development of industrial areas, water shortage worsening situation of China, sewage irrigation has become an important part of agricultural irrigation, however, sewage irrigation system is not yet perfect, so the impact of water quality research on rice quality and soil property is very prominent practical significance. This test uses a cell test method using sodium arsenite (NaAsO2), lead nitrate (Pb (NO3) 2) and potassium fluoride (KF) three kinds of chemicals are arranged six different concentrations of As, Pb, F solution for irrigation, in rice growth observed during its height, tiller number and leaf number, after mature rice sampled and analyzed by weighing and calculated its spike length, grains per panicle, seed setting rate, kernel mass and yield per plant were determined, and then test the quality of its appearance through the instrument, nutritional quality, rice quality and health quality, then after the soil, and rice milling plant, were factors as well as their physical and chemical properties of soil content of each part by the physical and chemical experiments testing.The above data using SPSS and Excel software, such as consolidation analysis the following conclusions.(1) At different concentrations As of water for irrigation, each rice growing index with increasing irrigation concentration of both showed a downward trend, but not significant, As for the influence tiller number and leaf number is greater than the impact on plant height; As for rice yield has a certain extent, but the effect is not obvious. Appearance quality and nutritional quality of rice had no significant effect, can meet the standards of green rice; on milling quality of Rice inhibited to some extent, but the effect is not obvious; when As in the irrigation water concentrations exceed 0.035mg/L, health quality of rice exceeding green rice standards. As concentration in irrigation water with total nitrogen content in soil showed a very significant negative correlation with available phosphorus and potassium content in soil showed a significant negative correlation. Most of the As factors residues in the soil and roots, a small part of the As factor to migrate to stems and leaves, little As factor to migrate to milled rice; rice for As factor enrichment capability is weak, and with the increasing concentration of irrigation rice for As factor enrichment coefficient was no significant change in trend.(2) At different concentrations Pb of water for irrigation, each rice growing index with increasing irrigation concentration of both showed a downward trend, but not significant, As for the influence tiller number and leaf number is greater than the impact on plant height; As for rice yield has a certain extent, but the effect is not obvious. No significant effect on the appearance quality of rice in the aspect ratio, however the chalky rate and chalkiness with increasing Pb water concentration increases, but can meet the standards of green rice; on milling quality of Rice inhibited to some extent, but the effect is not obvious; no significant adverse effects on the nutritional quality of rice, can meet the standards of green rice; when Pb in the irrigation water concentrations exceed 0.006mg/L, health quality of rice exceeding green rice standards. Pb concentration in irrigation water with soil organic matter content showed a significant positive correlation, with total nitrogen content in soil showed a very significant negative correlation with soil available potassium content showed a significant negative correlation. Most Pb factor residues in the soil and roots, only a few Pb factor to migrate to stems, leaves and milled rice; rice for Pb factor enrichment capability is extremely weak, and with the increasing concentration of irrigation rice for Pb factor enrichment coefficient was no significant change in trend.(3) At different concentrations F of water for irrigation, various rice growing index no significant change; on rice yield has a certain extent, but the effect is not obvious. No significant effect on the appearance quality of rice in the aspect ratio, however the chalky rate and chalkiness with increasing F water concentration increases, but can meet the standards of green rice; on milling quality of Rice inhibited to some extent, but the effect is not obvious; no significant adverse effects on the nutritional quality of rice, can meet the standards of green rice; when F in the irrigation water concentrations exceed 1.545mg/L, health quality of rice exceeding green rice standards. F concentration in irrigation water with total nitrogen and available phosphorus content in soil showed a significant negative correlation, with the potassium content in soil showed a very significant negative correlation. Most F factor remains in the soil, roots, stems and leaves, small part of F factor the move to polished rice. Rice for F factor enrichment capacity in general, and with the increase of the concentration of irrigated rice for F factor enrichment coefficient showed a first increased and then decreased trend.