The experiment of cole showed that in acid soil, the yield of the cole could be reduced significantly when the amount of Se (Ⅵ)≥0.5mg/kg, while the influence on the yield was not obvious when the content of Se (Ⅵ) reached 2.0mg/kg.
The results indicated that there was a significant effect of nitrogen fertilizer rate and soil water content on the yield. W2N2(soil water lower limit 60%Q,0.2gN/kg dry soil) obtained the highest yield.
3. The equation of the yield to yield characters Chuannong 16 was y=-415.2685+16.0237x2+7.9396x4+8.0625x5-1.4065x6. The partial correlation and path analysis showed that the spike numbers per hectare, compared with other yield components, had more contribution to and influence on the yield.
In a controlled irrigation experiment,winter wheat was grown with different water treatments to study their effect on the yield,water use efficiency and water consumption and on the contribution of various yield-forming characters to grain yield of the crop.
The synthesis of p tert butylphenol from the alkylation of phenol with tert butyl chloride was catalyzed by solid superacid Fe 2O 3 SO 4,and the factors influencing on the yield of the reaction were discussed.
Structures of the products were characterized by IR and 1HNMR. Effect of reaction conditions on the yield was studied. The best reaction conditions were microwave irradiation power 750 W and microwave irradiation time 1.5 min.
The influence of ageing precipitation particles containing copper on the yield strength, the size distribution of precipitates, and the blocking effect of the precipitates on dislocation slips in high purity Fe-1.03 wt% Cu and Fe-1.65 wt% Cu alloys were observed and investigated.
(5) T4 heat treatment can improve the tensile strength and elongation of the alloys and has little influence on the yield strength and hardness. T6 heat treatment can improve the tensile strength and hardness of the alloys, reduce the elongation and has little influence on the yield strength.
The experiment was conducted to study the effect of different seeding time on the yield and quality of it. The result indicated that the suitable seeding time for Liang-You 2186 is April 15 to May 25.
The study is to provide scientific base for high production of mid-gluten wheat with certain applying amount of nitrogen fertilizer. Effects of the quantities of nitrogen fertilizer on the yield and population quality of mid-gluten Yangmai 11 are studied in the experiment.
Effect of the reaction time, mole ratio of reactants, and amount of catalyst on the yield of benzodioxoles were investigated.
Effects of reaction time, temperature, solvents, catalysts and feeding molar ratio on the yield and quality of products were investigated, and an improved procedure suitable for industrial production was established.
Effects of exogenous folic acid on the yield and amino acid content of the seed ofPisum sativum L.
Effect of Additives Containing a Heavy Atom on the Yield of Photooxidation Products of Arylazides
The effect of additives containing a heavy atom on the yield of nitroso and nitro compounds, the photooxidation products of arylazides, was studied.