“天脊”土壤调理剂在湘南稻田施用效果

Effects of Tianji soil Conditioner Applying on Paddy filed in Southern Hunan

采用田间小区试验,研究了“天脊”土壤调理剂在水稻上的施用效果。试验设置5个处理,常规施肥(ck)、常规施肥+“天脊”调理剂900 kg/hm^2、常规施肥+“天脊”调理剂1800 kg/hm^2、常规施肥+生石灰900 kg/hm^2、常规施肥+生石灰1800 kg/hm^2,研究土壤调理剂对水稻产量和经济性状以及稻田土壤理化性质的影响。结果表明,施用“天脊”调理剂和生石灰均有一定的促增产作用,常规施肥+“天脊”调理剂1800 kg/hm^2处理下稻谷和稻草产量均高于其他处理。各处理水稻有效穗数和千粒重差异不显著(p>0.05),谷草比以常规施肥+生石灰900 kg/hm^2处理较高。一季水稻后,各处理土壤理化性质未见明显差异。因此,在常规施肥基础上,施加“天脊”调理剂1800 kg/hm^2是相对较好的施肥措施,可以提高水稻产量和维持土壤肥力。

The effects of Tianji soil conditioner applying on rice was studied by field plot experiment.The experiment set up five treatments,including conventional fertilizer(ck),conventional fertilizer with Tianji conditioner 900 kg/hm^2,conventional fertilizer with Tianji conditioner 1800 kg/hm^2,conventional fertilizer with quicklime 900 kg/hm^2,conventional fertilizer with quicklime 1800 kg/hm^2,the rice yield and economic traits were measured,as well as physical and chemical traits of paddy soil.The results showed that the application of Tianji conditioner and quicklime could improve the yield of rice to a certain extent,and the yield of grain and straw under the treatment of conventional fertilizer with Tianji conditioner 1800 kg/hm^2 were higher than that of other treatments.The effective panicle number and 1000-grain weight of each treatment were not significantly different(p>0.05),but the ratio of grain/straw under conventional fertilized with quicklime 900 kg/hm^2 treatment was the highest in the five treatments.After one season,there was no significant difference in soil physical and chemical properties among these treatments.Therefore,on the basis of conventional fertilizer,the application of Tianji conditioner 1800 kg/hm^2 was a relatively good farming measure,which could improve rice yield and maintain soil fertility.