The invention discloses a formula fertilizer with total nutrient of nitrogen, phosphorus and potassium being 50%, aiming at solving the problems of inaccurate formula proportion and inappropriate actual operation. The formula fertilizer is prepared by mixing calcium-magnesium phosphate powder, calcium ...
aFertilize three to five times during the growing season with a low nitrogen fertilizer, such as fish emulsion. Follow the label instructions for dosage. 在生长季节期间与一种低氮气肥料,施肥三到五次,例如鱼乳化液。 遵守标签指示为剂量。[translate]...
In order to explore the suitable density and nitrogen fertilization rate of Bao 213 and Jigu 14,split block experimental design was set with the densities(52.5,60.0,67.5 and 75.0 plants/m2),nitrogen fertilization rates(0.0,4.5,9.0,13.5 and 18.0 g/m2),the effects of different treatments on yi...
The results show that excessive application of fertilizer was the primary cause of nitrogen and phosphorus loss from the farmland. Among different varieties of fertilizer, ammonium nitrate remarkably increased the concentration of total nitrogen in the runoff. Compared with other treatments and levels, ...
9. In the first crop, the yield was increased with the amount of fertilizer. 第一期作施氮量自0公斤/公顷递增至120公斤/公顷,在谷与药方面之产率亦依次显著增加。 10. 10. Rice; utilization efficiency of nitrogen fertilizer; nitrogen efficiency in producing grain yield ...
and the outcome of fertigation may vary with factors such as crop species, the number of cultivated years, and amounts of nutrient supplied each season. Redundant water andfertilizer applicationcause the rapid accumulation of alkali-hydrolyzable nitrogen that triggerssoil salinization(Liang et al., ...
Use of a chlorophyll meter to evaluate the nitrogen status of dryland winter wheat have been taken in the spring at the late tillering stage (Feekes 5) to document a crop N deficiency and to make fertilizer N recommendations. The... RH Follett,RF Follett,AD Halvorson - 《Communications in ...
Before the wheat was sown, 40 kilograms of nitrogen per hectare, tagged with 20 percent nitrogen-15, was applied three times. Nitrate concentration in the soil solution, soil water content, and soil water suction were determined as a function of soil depth and time by means of suction probes...
China consumes over 50 million tons of fertilizer annually, with nitrogen fertilizers accounting for more than 40 million tons, CMG reported on Thursday. China's 2024 grain output reached a record 1.413 trillion jin (706.5 million tons), an increase of 22.2 billion jin from a year earlier, mar...
Human-induced nitrogen (N) input increased over tenfold with respect to one century ago1,2. Excessive N fer- tilization caused accumulation of significant amounts of N beyond crop absorption in soils, largely in the form foifcantiitornat2e,5,(wNhOic3−h)i3s,4.bSouthrpelcuosnNoOm3i...