生物质焦对冷浸田水稻生长·产量的影响  

Effects of Biochar Amendment on Growth and Yield of Rice in Cold Water Field

作　　者：王文军[1] 张祥明[1] 凌国宏[2] 

机构地区：[1]安徽省农业科学院土壤肥料研究所,安徽合肥230031 [2]黄山市歙县农业技术推广中心土肥站,安徽歙县245200

出　　处：《安徽农业科学》2013年第14期6220-6221,6243,共3页Journal of Anhui Agricultural Sciences

基　　金：国家农业行业专项(201003059)

摘　　要：[目的]探索生物质焦在冷浸田上的应用效果,以期为改良冷浸田提供科学依据。[方法]以D优202水稻为材料,采取田间小区试验的方法,研究不同用量生物质焦对水稻生长、产量的影响。[结果]施用生物质焦能够提高冷浸田早期土温,促进水稻的生长发育,特别是水稻分蘖期干物质积累明显,比对照增加17.6%～22.7%;增施生物质焦能明显提高水稻产量,比对照增加8.7%～14.8%,水稻产量先随生物质焦用量的增加而逐渐提高,但当用量超过2 250 kg/hm2时产量下降。经过回归分析,计算出最高产量生物质焦用量为2 238.8 kg/hm2。[结论]生物质焦能提高水稻生长发育前期土壤温度,解决冷浸田山阴水冷、水稻前期生长缓慢、易僵苗等问题,促进水稻干物质积累,促进水稻对氮、磷、钾等养分的吸收,提高水稻产量。生物质焦可以作为冷浸田的一种改良剂在生产上推广应用。[ Objective ] Application effect of biochar on cold water field was explored, in order to provide scientific basis for the amelioration of cold water field. [ Method] With the Dyou NO. 202 as test material, set up 5 different application rate of biochar, field plot experiment was car- ried out to study the effects of biochar on rice growth and yield. [ Result] The application of biochar could improve the cold water field soil tem- perature, promote rice growth, rice dry matter accumulation increased by 17.6% - 22.7% than CK; could significantly increase rice yield, com- pared with the control by 9.4% - 19.7%. Regression analysis to calculate the maximum rice yield of bioehar application rate was 2 238.8 kg/hm2. [ Conclusion] Applied biochar could improve soil temperature, promote rice growth and dry matter accumulation, improve the absorp- tion rate of nitrogen, phosphorus, potassium, increase rice yield. Biochar was an effective soil ameliorant of cold water field.

关 键 词：皖南山区 生物质焦 冷浸田 

分 类 号：S216[农业科学—农业机械化工程]