The Effects Of Different P And Zn Combination On The Growth, Yield And Nutrient Uptake Of Wheat

Tests in 2006-2007 in Anhui Academy of Agricultural Sciences at Madian of Mengcheng . In varieties for strong gluten wheat'yannong 19',use pots bowl tests and field trials the combination of research methods to study the different P, Zn ratio biomass of wheat, yield, nutrient content, nutrient accumulation and distribution, transshipment, the soil P content, Zn content of soil. The main test results are as follows:1 Effects of different levels of P and Zn on BiomassLow P level, Zn fertilization can promote the growth of wheat roots; high P level, Zn adequate facilities to promote the growth of wheat roots, but when the high-Zn antagonism of P and Zn. Antagonistic effect of Zn and P occurred in the mature stage Zn and P showed synergy occurred at tillering stage, heading stage the relationship between P and Zn for the transition period, high P and high-Zn and P Zn readily antagonist, the appropriate ratio of P and Zn and P Zn antagonism avoided.2 Effects of different levels of P and Zn on yieldWith the weight of wheat grain Zn fertilizer increased dosage. Low-P level of facilities and high-Zn and Production decreased significantly, low-P level increased the amount of Zn can be reduced due to excessive use of P fertilizer resulted in lower production levels. Several processing, P0.9Zn0.2 deal with the highest yield, and other processing to achieve a significant level of difference; two levels of P, Zn0 have to deal with relatively low production, and with the increase in the number of P reduction. Appropriate P and Zn ratio is conducive to the improvement of wheat grain yield and economic benefits increase. The results showed that: low P levels, Zn levels are too high, easy to under-nutrition caused by P, resulting in lower production rate; high P levels, leading to Zn deficiency, the effect of Zn increased significantly.3 Effects of different levels of P and Zn on the nutrient content(1) P of the root N content has little effect on the appropriate increase in Zn content of N in wheat roots, high Zn to reduce the rate of increase; P will reduce the different periods of wheat stem N content, an appropriate period of Zn increase the N content of wheat stem and high Zn will reduce the rate of increase. P effects on grain N content was not obvious was not obvious, appropriate measures to increase grain N content of Zn and high Zn will reduce the rate of increase. High appropriate Zn and P best. This indicates that appropriate measures will promote the stalk in the Zn and P, Zn synergies, there will be high-Zn antagonism of P and Zn.(2) P increased root and stem and leaf P content, inhibiting the transfer of P to the grain. However, to reduce the high P heading stage and grain of wheat stem and leaf P content; increase in grain Zn and P content in leaves and stems to reduce the P content, and high P to reduce the rate of increase.(3) P increased tillering stage and the Zn content of mature roots, lower root Zn content at heading stage, high-P roots Zn to reduce the Zn content of wheat. Zn is conducive to the appropriate transfer of Zn, and high-Zn wheat heading date has restrained the roots to the stems and leaves of the transfer of Zn. High P to promote the transfer of Zn to the leaves and stems in part, inhibiting the transfer of Zn to the grain.4 P and Zn on the impact of nutrient accumulation(1) to increase P N accumulation of wheat stems and leaves, reducing the volume of grain N accumulation. High P Zn appropriate the most suitable N accumulation of wheat root system, high-Zn wheat stems and leaves to reduce N accumulation. Heading stage Zn and P synergy Obviously, if P maturity imbalance occurs Zn and P, Zn antagonism phenomenon, the impact of genital N accumulation. (2) P increased tillering stage roots and mature stems and leaves of P accumulation, but the maturity is not conducive to the transfer of P to the grain. Low P levels increase with the amount of Zn, heading date of wheat roots increased the accumulation of P, high P level of the contrary. Increase in wheat stem and leaf Zn and P accumulation, but high levels of P increase is being undermined. Fertilize amount of Zn increased the accumulation of wheat genital P and high P reduced the increase degree.(3) P to reduce the accumulation of Zn. Low-P Zn adequate measures to increase the level of Zn accumulation in wheat, high increase in roots and stems and leaves of Zn accumulation in Zn, Zn accumulation in genital reduction. High levels of P and Zn increased tillering stage of wheat heading stage roots and tillering stage of wheat stem and leaf Zn accumulation, Zn appropriate measures to increase maturity and heading date of wheat stem and leaf Zn accumulation, but a decrease of mature and high-Zn wheat Zn accumulation in roots.5 P and Zn distribution on the impact of nutrient(1) Increase P and Zn, can increase the total N uptake of wheat tillering stage, tillering stage stem and leaf P increase in the ratio of N to reduce the tillering stage of the root of the ratio of N to reduce the total maturity of wheat N uptake, mature roots of N to increase the ratio of N to reduce the proportion of mature stems and leaves on the ear to increase the proportion of N have little effect. Zn increased maturity the proportion of N uptake ear to reduce the mature root and stem and leaf proportion of N uptake. Zn increased to deal with low P wheat total N uptake, appropriate measures to deal with high Zn and P significantly increased the total N uptake of wheat, high increase of severely reduced Zn.(2) P increased wheat tillering stage and maturity to absorb the total amount of P to reduce the total amount of maturity to absorb P, P roots increased the proportion of tillering stage, tillering stage to reduce the proportion of stems and leaves of P to increase the heading stage and root the proportion of stems and leaves of the Department of P to reduce the heading stage panicle weight of P. Zn increased the total P uptake of wheat tillering stage, low P level adequate facilities can be a significant increase in Zn stems and leaves of the ratio of the absorption of P, reducing the proportion of the roots of P and high P to reduce the rate of increase; Zn absorption of P increased the total amount of wheat heading stage However, the high rate of increase was severely reduced P; appropriate Zn can increase the absorption of P in wheat and small Pseudorasbora the Ministry of the total amount of P absorption ratio is conducive to P transport to the ear, stem and leaf P is conducive to the accumulation of P.(3)Both P and Zn can increase wheat tillering stage and heading stage total Zn absorption, Zn absorption to reduce the total amount of wheat maturity. Tillering stage the stems and leaves of P can increase the proportion of Zn to reduce the proportion of Zn in the root. Zn will increase the proportion of roots to absorb. Reduce the proportion of stem and leaf absorption. Heading stage P uptake of Zn increased the proportion of stem and leaf, root and ear to reduce the absorption of the proportion of Zn. Fertilize P increase in mature roots, stems and leaves of the proportion of Zn absorption, Zn absorption to reduce the proportion of grain and wheat of high Zn and P increased suppression operation.