Effects of biochar-based fertilizer on soil fertility, wheat growth and nutrient absorption
The development of biochar-based fertilizer is an important research area of biochar applications in agriculture. A pot trial in greenhouse was adopted to study the effects of the fertilizer containing different quantities of biochar on wheat growth and soil fertility. It was shown that (1) In wheat growth periods, the application of biochar-based fertilizers which the biochar content were more than 70% fertilizer accessories significantly increased the shoot dry weight, the root dry weight and the total dry weight of wheat, especially in the 100% content biochar treatment NPB4. However, the application of biochar-based fer-tilizer had no significant effect on the 1 000-grain weight of wheat. (2) The biochar-based fertilizer significantly improved the absorption of nitrogen ( N) , phosphorus ( P) in wheat by an average of 19. 07% and 15% respectively, in the order of NPB4> NPB3> NPB2>NPB1>CK. (3) The order of the content of soil organic matter was NPB4>NPB3>NPB2>NPB1>CK, which had a significant positive correlation with the added amounts of biochar (p<0. 05). (4) The contents of soil available N and available P mostly went down at first and then increased again, which indicated that the biochar-based fertilizer could continuously supply nutrients to wheat in the late stages of wheat growth.
NETL
NSTL
万方数据
维普
