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为了深索水稻机械化育苗移栽情况下的施肥体系,已进行了三年试验。在配施磷、钾肥情况下、只要施肥体系得当,总氮肥量亩施80斤硫铵已出现亩产一千二百斤以上的小区和试验点。低温年必须适当地减少施氮肥总量(10—15%),控制中间肥、适量(20斤硫铵/亩)追施减分肥,看天看苗施1—2次粒肥(每次610斤硫铵/亩),这是战胜延迟性冷害夺取高产稳产的较好施肥体系,但高温年至少比低温年增施枝梗肥10斤硫铵/亩。为了夺取高产稳产,争取6月25日左右为有效分薛终止期,适当施用前期氮肥(50—60硫铵/亩)。如果6月25日已达到计划棵就要适当增加后期氮肥比例、妥当按排前后期施肥比例(75:25或60:40),这是提高肥料氮增产稻谷的较好施肥体系。为了及时采取高产稳产的有效措施、只少在生育期内诊断生长量和功能叶色变化。三年来据70个小区的生长量调查,低温年最高产量(1,300斤/亩)小区(品种:友谊三号)生产量曲线方程为 (?)=57,4763/(1+23.4540e~(-0.1327)x)(r=0.967~(**))、高温年最高产量(1,314.87斤/亩)小区(品种:81065号)生长量曲线方程为(?)=48,289.90/(1+28,(?)693e~(-0.2008)x)(r=0.96~(**))。为了夺得亩产一千二百斤、在有效分薛期,日本《标准叶色板》保持5.5级,幼穗分化开始后一周降为5级,减分、出穗开花、乳熟(?)期保持5级,腊熟期为4级较为理想。
In order to deepen the mechanization of rice transplanting seedlings in the case of fertilization system, has conducted a three-year trial. In the allocation of phosphorus, potash, as long as the proper fertilization system, the total amount of nitrogen fertilizer Mushu 80 kg of ammonium sulfate has emerged more than 1,200 mu of plots and test sites. Low-temperature year must be appropriate to reduce the total amount of nitrogen fertilizer (10-15%), control of intermediate fertilizer, appropriate amount (20 kg ammonium sulfate / acre) topdressing fertilizer, Kg ammonium sulfate / mu), which is to overcome the delayed chilling to seize a good high-yielding and stable system of fertilization, but at least in the high-temperature year than the low-temperature grazing stalks 10 kg ammonium sulfate / acre. In order to seize high and stable yield, strive for effective points around June 25 Xue termination, the appropriate application of nitrogen fertilizer (50-60 ammonium sulfate / acre). If June 25 plan has reached a planner will be appropriate to increase the proportion of late nitrogen fertilizer, according to the proportion of fertilizer before and after the row (75:25 or 60:40), which is to improve fertilizer nitrogen to increase the yield of rice better fertilization system. In order to promptly take effective measures of high yield and stable yield, only less in the growth of the diagnosis of growth and functional leaf color changes. According to the survey of the growth of 70 plots in the past three years, the yield curve equation of the plot (breed: Friendship III) with the highest yield (1,300 kg / mu) in low temperature was 57,4763 / (1 + 23.4540e ~ 0.1327) x) (r = 0.967 ~ (**)), the highest yield (1,314.87 kg / mu) in high temperature was plotted as (48.889.90 / (1 + 28) ) 693e ~ (-0.2008) x) (r = 0.96 ~ (**)). In order to seize the yield of 1,200 kg per mu, in the effective sub-Xue period, the Japanese “standard leaf color plate” remains at 5.5 level, and the panicle is reduced to grade 5 one week after the start of differentiation. ) To maintain five, waxy maturity of 4 is more ideal.