摘要
Aiken base silicon,advanced silicon,activated carbon,desulphurization gypsum,ferric phosphate,humic acid,aluminum dihydrogen phosphate etc.were used as raw meterials to conduct the compound development of salt-alkali soil amendents,and the salt-tolerant rice"Chaoyouqianhao"was used as the test variety to verify the effect of increasing yield under simulated salt stress environment.The results showed that at the tillering stage,the growth indexes of rice plant in the treatment with soil amendements were better than that in the treatment without soil amendments(CK2).Of which,T5 and T6 had the best effect,and the dry weight of rice plant increased by 40.99%and 70.06%,respectively,compared to the CK2.At the maturity stage,T5,T6 and T7 had a better effect on the increase of rice yield.Of which,T5 had the highest yield,up to 6533.32 kg/hm^(2),which increased by 29.97%compared to the CK2.Focused on the soil amendments formulation in the T5 and T6,the two formulations all contained ferric phosphate,humic acid,calcium magnesium phosphate fertilizer,indicating that these substances played an important role in saline-alkali soil improvement.
以艾肯基础硅、高级硅、活性炭、脱硫石膏、磷酸铁、腐殖酸和磷酸二氢铝等为原材料进行盐碱土壤改良剂的复配开发,并以耐盐水稻"超优千号"为供试品种在模拟的盐胁迫环境下进行土壤改良剂的增产效果验证。结果表明,在水稻分蘖期,撒施土壤改良剂的处理水稻植株生长指标均优于同样处于盐胁迫环境的未撒施改良剂的处理(CK2),其中T5和T6处理的效果最好,植株干重分别比CK2增加40.99%和70.06%;水稻成熟后,以T5、T6和T7处理的增产效果较好,其中T5处理产量最高,达6533.32kg/hm^(2),比CK2增产29.97%。从T5和T6处理的改良剂配方来看,2种配方中均包含了磷酸铁、腐殖酸、钙镁磷肥,表明这几种物质在盐碱土壤改良中发挥了重要作用。
基金
湖南省科技重大专项(2018NK-1010)。
