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在田间自然条件下研究了不同施肥处理对水稻生长发育的影响。该试验设有CK区(不施肥对照)、常规施肥区、无氮区、无磷区、无钾区、控释肥1区(施氮量等于常规施肥施氮量)、控释肥2区(施氮量为常规施肥施氮量的2/3)、常规施肥加腐植酸叶面肥区8个肥料处理。研究结果表明,不同施肥处理对水稻生长发影响很大,其中常规施肥加腐植酸叶面肥区和控释肥1区、控释肥2区叶面积大、单位面积上的穗数和实粒数多、产量高,腐植酸叶面肥区效果最好;无氮区与CK区各指标数大致相等,水稻生长发育各因素很低;无磷区、无钾区和常规施肥区各指标介于CK区与腐植酸叶面肥区之间。试验结果表明,腐植酸叶面肥因含有天然腐植酸、氮、磷、钾及微量元素,对水稻生长发育的影响明显;氮素对水稻生长发育的影响最大,其施用直接影响着水稻产量的高低;控释肥因其中营养元素缓慢释放,达到了养分供应时间长,利用率高的目的,对水稻生长发育的影响明显。
The effects of different fertilization treatments on the growth and development of rice were studied under natural conditions in the field. The experiment includes CK zone (no fertilization control), conventional fertilization zone, no nitrogen zone, no phosphorus zone, no potassium zone, controlled release fertilizer zone 1 (nitrogen application rate is equal to conventional nitrogen application rate) (Nitrogen application rate is 2/3 of conventional nitrogen application rate), conventional fertilization plus humic acid foliar fertilizer area 8 fertilizer treatment. The results showed that different fertilization treatments had a great impact on the growth of rice. Among them, foliar application of conventional fertilization plus folic acid control fertilizer and controlled release fertilizer 1, leaf area of control release fertilizer 2, spike number and grain per unit area The results showed that all the indexes of nitrogen-free zone and CK zone were almost equal, and the factors of rice growth and development were very low. The indexes of non-phosphorus zone, potassium-free zone and conventional fertilization zone Between CK and humic acid foliar fertilizer area. The results showed that the humic acid foliar fertilizer had obvious effects on the growth and development of rice due to the inclusion of natural humic acid, nitrogen, phosphorus, potassium and trace elements. Nitrogen had the greatest impact on the growth and development of rice and its application had a direct impact on the yield of rice Because of the slow release of nutrient elements, the controlled release fertilizer has achieved the purpose of long nutrient supply time and high utilization rate, and has obvious effect on the growth and development of rice.