Screening experiment of soil conditioner for direct seeding rice in saline-alkali soil
In order to screen the suitable soil conditioners for direct seeding rice in saline-alkali land,6 marketed soil conditioners were introduced to study the effect of soil improvers on soil chemical properties,seedling quality and yield before and after planting through one season of direct seeding rice planting.The results showed that soil conditioners had significant effects on reducing soil pH and soil water-soluble salinity,with the highest reduction of 2.76%and 0.9 g·kg-1 in Site 1,and 2.78%and 0.58 g·kg-1 in Site 2,respectively.Soil conditioners have no significant effect on increasing the content of total nitrogen,available phosphorus,available potassium and organic matter in saline-alkali land.Soil conditioners significantly promoted the quality of rice seedlings and could significantly increase the number of effective spikes and rice yield,with the highest yield increase of 11.06%and 6.44%in Site 1 and 2,respectively.The yield increase effect of soil conditioners on high salinity saline land was better than that on low salinity saline land,among which the three soil conditioners used in the experiment,Yan Jian Xiao,Beijing Kang Yuan and Hong Du Jia Ye,have better yield increase effect and can be used for reference.
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万方数据
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