论文部分内容阅读
在印度巴伦布尔,喜马偕尔邦农业大学土壤学和水管理系的温室中,开展了一项试验,以研究施硅和不施硅土壤中铁和锰的互作效应。供试作物为水稻(RT—42),施锰(mnso4、7H2o)量为0,25mg/kg,施铁(Fes04、2H20)量为0,25,50mg/kg,施硅(NazSio3、5H20)量为0,200mg/kg。未施硅土壤,施锰25mg/kg与对照相比,增加了稻谷和稻草产量,而施锰50mg/kg与施25mg/kg相比则降低了产量。当用硅处理土壤时,施锰(?)0mg/kg未对水稻产量产生任何影响,然而在施铁情况下,硅处理的土壤中、施锰50mg/kg可增加水稻产量,甚至超过施锰25mg/kg处理,但在非硅处理土壤中,此种锰用量未对产量产生任何效应。硅处理土壤上的稻谷和稻草产量比非硅处理土壤上的高。铁和锰的吸收和浓度分别随铁锰的施用而降低。非硅处理土壤上水稻内铁和锰浓度以及对铁的吸收比硅处理的土壤高,而锰的吸收不受硅处理的影响。当施入更多的铁和锰时,根系对其吸持降低,而其向茎叶部的动运移则增加,而施入较多的锰或硅时,有较多的铁被根系保留,向茎叶部的运移则较少;施入较多的铁或硅时,有较多的锰被根系保留,向茎叶部的运移减少,达到分 拼时期,水稻对锰和铁的吸收分别为0.85和0.51mg盆,分蘖至开花期为7.27和4.85/mg盆,开花至成熟期为4.20和2.52mg/盆,达到时熟时,水稻吸收
In a greenhouse in the Department of Soil Science and Water Management at Bhumibol, Himachal Pradesh, India, a study was conducted to study the interaction between iron and manganese in silicon-applied and silicon-free soils. The test crop was rice (RT-42), the amount of mnso4,7H2o was 0,25mg / kg, the amount of ferrous (Fes04,2H20) was 0,25,50mg / kg, The amount was 0,200 mg / kg. Compared with the control, the application of 25mg / kg of manganese increased the yield of rice and straw, while the application of 50mg / kg of manganese reduced the yield compared with that of 25mg / kg. When treated with silicon, the application of 0 mg / kg of manganese did not have any effect on the yield of rice. However, in the treatment of silicon, the application of 50 mg / kg of manganese increased the yield of rice even more than the application of manganese 25 mg / kg, but this amount of manganese did not have any effect on yield in non-silicon treated soil. Yields of rice and straw on silicon-treated soil were higher than those on non-silicon-treated soil. The absorption and concentration of iron and manganese decrease with the application of FeMn, respectively. The concentration of iron and manganese in rice and the absorption of iron in non-silicon-treated soil were higher than those in silicon-treated soil, while the absorption of manganese was not affected by the treatment with silicon. When more iron and manganese were applied, the root system decreased its uptake and increased its migration to the stem and leaf, while more iron was retained by the roots when more manganese or silicon was applied , And less migration to the stems and leaves; when more iron or silicon is applied, more manganese is retained by roots and less migration to stems and leaves; The absorptions were 0.85 and 0.51 mg pots, respectively, tillering to the flowering stage was 7.27 and 4.85 / mg pots, flowering to maturity of 4.20 and 2.52 mg / pot, when ripe, rice absorption