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以硫酸钙(生石膏)为试验材料,以大蒜生长指标为研究对象,采用完全随机区组设计,在石灰性土壤中设置75、150、225、300kg/hm2不同硫酸钙施肥量处理,以不施钙肥为对照(CK),测定大蒜各生育时期到达的时间、蒜头产量、单个蒜头重量,以研究硫酸钙肥对石灰性土壤中大蒜的生长发育、抗性及产量的影响。结果表明:在石灰性土壤中施用不同量的硫酸钙肥处理可使大蒜的幼苗期、花磷芽分化期、花茎伸长期、鳞茎肥大期提前0~2d、成熟期延迟0~3d,增施钙肥量可使大蒜的抗病虫害性能呈现感染→较轻→较抗的变化趋势;随施肥量增加,单蒜头重量增加,进而使产量增加;4种施肥处理单蒜头重量分别比对照增加8.74%、13.29%、18.91%、25.30%,产量分别比对照增加8.73%、13.27%、18.90%、25.29%,均达到差异极显著水平;因此,在石灰性土壤中施用硫酸钙肥对大蒜生育时期有一定影响,对提高大蒜的抗病虫性能及增加单蒜头重量进而提高产量有明显效果。
Taking calcium sulfate (gypsum) as test material and garlic growth index as research object, completely randomized block design was adopted to set up 75,150,225,300kg / hm2 different amount of calcium sulfate in calcareous soil so as to not apply Calcium fertilizer was used as control (CK). The time of reaching each growth period of garlic, the yield of garlic and the weight of individual garlic were measured to study the effect of calcium sulfate on the growth, resistance and yield of garlic in calcareous soil. The results showed that the application of different amounts of calcium sulfate fertilizer in calcareous soils could reduce the seedling stage, flower bud differentiation stage, elongation stage of stems and bulblet stage to 0 ~ 2 days in advance and 0 ~ 3d in maturation stage The amount of calcium fertilizer could make the pest resistance of garlic show the trend of infection → lighter → more resistant. With the increase of fertilizer amount, the weight of single garlic head increased, then the output increased. The weight of the four kinds of fertilizer treatments increased by 8.74% , 13.29%, 18.91% and 25.30% respectively. The yield increased by 8.73%, 13.27%, 18.90% and 25.29% respectively compared with the control, reaching the extremely significant difference. Therefore, applying calcium sulphate fertilizer to calcareous soil A certain impact, to improve the pest resistance of garlic and increase the weight of a single garlic and then increase the yield have a significant effect.