Effects Of Nutrient And Yield On The Different Water Level And Nitrogen Rate Of Throwing Fields

This experiment was carried out during the rice growth period and use three different treatment respectively, Low level of water and Nitrogen(A),medium level of water and Nitrogen(B) and higher level of water and Nitrogen(C), to determine the Effects of Nutrient and Yield on the Different Water level and Nitrogen Rate of Throwing Fields, the main results were as follows:1、During the different fertilizing application period, different level of water and nitrogen treatment of early paddy rice field, nitrogen content as well as plant growth show a declining trend, from higher to lower C>B>A, Nitrogen content change trend of late rice field solution basic consistent with that of early rice, rice paddy fields solution after fertilization of Nitrogen content decreased slowly in late rice. Among them, treatment A under the nitrogen content was the slowest followed by minimum change in treatment, B and C with a fastest declined2、A treatment in the early paddy rice field can effectively improve the soil nutrient element content, B treatment can improve soil nitrogen content, C treatment can reduce the soil pH value, In the late rice B treatment and C treatment can enhance soil total nitrogen content, A treatment and C treatment can reduce the soil pH.3、C treatment of early and late rice root, stem, leaf and grain increases nitrogen, phosphorus and potassium content, followed by A treatment in addition, C treatment of early rice and late rice, nitrogen content in stem and leaf sheath, leaf, spike were highest, seconded by B treatment.4、A treatment of early rice from flowering to late grouting, the functional leaf chlorophyll and nitrogen content is highest, the lowest in C treatment and late flowering period in late rice to grouting, B treatment has the highest chlorophyll and nitrogen content in general, the lowest for A treatment.5、A treatment can effectively increase the function leaf area of early rice, attain suitable growth, effective tillering and stem diameter and number of spikelet, followed by B and C treatment the Late, Late rice in terms of A deal with most of the spike grain number, spike length of optimal B Late, C treatment in seed setting rate, grain length and grain width are best.6、The yield of early rice and late rice was highest, C treatment high production, A treatment is minimum, nitrogen fertilizer use efficiency of rice for the three water treatment in the highest, followed by B and C dealing with lowest fertilizer use efficiency.