论文部分内容阅读
[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] The research aimed to explore the application effect of biomass coke in cold soaking field, in order to provide scientific basis for improving cold soaked field. [Method] With D-202 as tested material, field experiments were conducted to study the effects of different amount of biomass coke on the growth and yield of rice. [Result] The application of biomass coke could increase the early soil temperature in cold soaking field and promote the growth and development of rice, especially the accumulation of dry matter in tillering stage of rice increased by 17.6% ~ 22.7% compared with the control; The yield was increased by 8.7% ~ 14.8% comparing with the control. The rice yield first increased with the increase of biomass coke amount, but decreased when the dosage exceeded 2 250 kg / hm2. After regression analysis, the calculated maximum biomass biomass coke amount was 2 238.8 kg / hm2. [Conclusion] Biomass coke could increase the soil temperature in the early stage of rice growth and development, solve the problems of shanyin water cooling in cold soaking field, slow growth of early rice and easy seedling, and promote the accumulation of dry matter in rice and the promotion of nitrogen, phosphorus and potassium in rice Absorb, increase rice production. Biomass coke can be used as a kind of improver in cold dip field to promote the production.