Study Of The Application Of Organic-Inorganic Fertilizer On Thenutrient Accumulation Of Rice And Nitrogen Use Efficiency

This paper using field plot test research the effects of different organo-inorganic fertilizer on dry matter accumulation of rice and nutrients, production, quality and the effects of nitrogen use efficiency, and Whether could reduce the number of rice topdressing, The results are as follows:1. In the process of the combined application of organic and inorganic fertilizers, the results showed that the total accumulation of rice NPK are N22M (Application of pure inorganic nitrogen120kg·hm-2, and organic fertilizer300kg·hm-2, topdressing once)>N21M(Application of pure inorganic nitrogen120kg·hm-2, and organic fertilizer300kg·hm-2, not topdressing)> N12M (Application of pure inorganic nitrogen80kg·hm-2, and organic fertilizer300kg·hm-2, topdressing once)>N11M.(Application of pure inorganic nitrogen80kg·hm-2, and organic fertilizer300kg·hm-2, not topdressing),Under the same nitrogen conditions, fertilizer processing is higher than the unfertilized. In these seven processing, the maximum nutrient accumulation is in N22M, which is higher than the farmers’ onventional fertilization treatment, and N22M has the highest contribution rate after heading substances. Therefore, the combined applications of organic and inorganic fertilizers which use adaptable proportion promote the rice nutrient absorption.2. By this combination, the nitrogen absorption, utilization in application processing, nitrogen agronomic efficiency N physiological use efficiency, nitrogen partial factor productivity are all higher than the farmers’ conventional fertilization processing. Therefore, the combined applications of organic and inorganic fertilizers improved the nitrogen use efficiency.3. Organic and inorganic fertilizers with handling N21M of the amended treatment and processing of the N22M total dry matter accumulation, heading stage-mature stage of accumulation of dry matter and panicle weight proportion is higher than the farmers’ conventional fertilization treatment. During the applications of organic and inorganic fertilizers N22M, CAT is lowest,and CPA is highest. Therefore, the combined application of organic and inorganic fertilizers which use adaptable proportion promote the dry matter accumulation, and lays a good foundation for the high yield of rice.4. By this combination, under the same nitrogen conditions, between the topdressing and the untopdressing, the yield of N12M is higher than NnM by10.22%, at the same time, the yield of N22M is higher than N21M by14.95%, the yield by farmers’ conventional fertilization processing (processing N3M0) are lower than the high nitrogen level of the organic and inorganic fertilizers with the application processing by10kg·hm-2to1260kg·hm-2, and the difference to N22M reach to a significant level (P<0.01). Therefore, the combined applications of organic and inorganic fertilizers which use adaptable proportion increase the rice yields.5. By this combination, under the same nitrogen conditions. The brown rice, milled rice, and the fine rice rate through topdressing are all higher than the ones that are not top dressed. At the same time, processing N21M and N22M are both higher than the farmers’ conventional fertilization processing. And the Chalkiness rate of these two processing are lower than other treatments. As well the difference to the farmers’ conventional fertilization treatments reached to a significant level (P<0.05). the amylase content of processing N3M0are the lowest, but there is no clear difference between processing N21M and processing N22M. The processing N22M has the highest protein content whose content of nitrogen does not exceed7%. Therefore, the combined applications of organic and inorganic fertilizers which use adaptable proportion improve the quality of the rice.