追施

同不施N肥小区相比，淹水后每亩追施15和30公斤硫酸铵在中肥地上增产13.8%和22.8%，在高肥地上增产9.3%和11.2%。

As compared with the non-nitrogen fertilized plots , dressing with 15 and 30 kg ( NH4 ) 2SO4 per mu after flooding increased grain yield by 13.8 % and 22.8 % in medium-fertility plots , and by 9.3 % and 11.2 % in fertile plots .

在开花期或种于形成初期，再追施50kg／hm2氮，两个大豆品种都获得了最高的氮吸收总量和固氮总量。

A N top dressing of 50 kg N / ha at flowering stage ( R1 ) or seed formation stage ( R5 ), both varieties obtained highest amount of N uptake and amount of N fixed .

追施液态氮（N）素化肥的方法研究

A Study of Method Applying Liquid Nitrogen Fertilizer

地热温室甜椒追施CO2的研究

Study of topdressing co_2 on sugar pepper in the Geothermal Greenhouse

不同叶龄期追施N、K肥对中粳稻产量和群体质量影响的研究

Effect of Application of Nitrogen and Potassium at Different Leaf Age Period on Yield and Population Quality of One-season-medium Rice

不同叶龄期追施N、K肥对水稻抗倒及干物质积累影响

Effect on Lodging Resistance of Culms and Dry Material Accumulation at Different Leaf Age to Topdress N and K Fertilizer in Rice

土壤施肥对NR的影响表明：追施尿素可以维持叶片较高的NR活性水平，提高叶片对NO3-的同化能力。

Fertilization in soil showed urea could maintain the higher NR activity in leaves and increased the ability of assimilation NO - _3 .

新修梯田马铃薯沟种较平作、垄作产量分别提高11.1%和15.9%，产值分别增加7.9%和23.6%，追施N肥可使产量和产值分别增加20.3%和15.7%；

The yield of potato with furrow planting could be increased by 11.1 % and 15.9 % , and the output values increased by 7.9 % and 23.6 % respectively compared with that by flat and ridge planting in newly built terraced field .

追施氮肥的时期不同，对棉花功能叶片的SPAD值、净光合速率和叶面积指数都有影响。

Topdressing nitrogen period is different , the function of cotton leaf SPAD value , net photosynthetic rate and leaf area index have influence .

应用15N示踪技术研究氮素不同底施和追施比例对小麦氮素利用的效应。

By using 15 N tracer technique the effects of different application proportion of basic dressing and top dressing of nitrogen on its utilization in bread wheat were studied .

整体而言，番茄越冬长季节栽培过程中，氮钾（N∶K2O）的追施比例以1∶12～13为宜；

From the point of view of whole cultivating process of overwintering tomato , the most appropriate formula of nitrogen-potassium fertilizer ( N ∶ K_2O ) for the purpose of top addressing should be 1 ∶ 1.2 ~ 1.3 ;

试验主要得到以下结论：（1）随追施沼液配方肥量的增加，油菜的干重和鲜重呈先升高后降低的规律，拐点为6.0ml/kg（A3）时。

The main conclusions are the following : ( 1 ) With the increasing in biogas slurry-based fertilizer , pakchoi in dry weight and fresh weight were showed a trend from ascent to descent , that reached significant level .

中期大量钾素随果实采收而移走，应增加钾肥施用量，氮钾（N∶K2O）追施比例宜为1∶12～1∶14；

At the middle stage , as a great deal of K was removed with the harvest of fruit , the dosage of K application should be increased therefore , thus the appreciate ratio of N and K_2O should range from 1 ∶ 1.2 to 1 ∶ 1.4 ;

在毛豆的开花期或种子形成初期，每公顷再追施50kg尿素，两个毛豆品种都获得了最高的干物质产量和饱荚产量，对早熟品种效果更佳。

Urea top dressing of 50kg / hm 2 at flowering stage or seed formation stage , both varieties obtained highest biomass and yield , the effect to early ripening varieties was more significant .

通过试验得出：采用60cm×60cm的种植密度，施用农家肥作底肥，并于种植期间，每两个月每平方米追施50g的尿素，可获得最佳的石菖蒲人工栽培效果。

The experimental results showed that adopting the planting density of 60 cm × 60 cm , using basal manure , and top dressing with 50g / m ~ ( 3 ) urea every two months , the optimum cultivation effect could be achieved .

即：运用80%森林土+20%火烧土及20%复合肥均匀混合的培育基质，采用大规格的容器15cm×19cm，于育苗期间定期追施沼气肥可取得榉树容器苗壮苗培育的好效果；

Using the medium of 80 % forest soil + 20 % burnt soil and 20 % compound fertilizer as the cultivation medium , container of 15 cm × 19 cm , biogas waste fertilizer as top dressing could achieved good effect .

因此，可将RVI（810560）值4.8、7.8，顶1叶SPAD值41.1、47.1分别作为拔节期与孕穗期氮素营养的丰缺阈值，并以此确定相应的追施氮量。

Thus , the values 4.8 and 7.8 of RVI ( 810,560 ), and 41.1 and 47.1 of SPAD on the first leaf could be considered as the threshold values of nitrogen deficiency at jointing and booting , respectively , which would be used for determining desirable nitrogen dressing amount .

当MEISTER包膜尿素施用量减少20%时，玉米和水稻产量与尿素追施处理相当，但玉米根和叶中氮的含量以及水稻秸杆和根中氮含量明显降低。

When application rate of the coated urea MEISTER was diminished by 20 % , maize and rice yields were almost identical with those of urea split application , but those of maize root and leaf and N contents of rice stalk and root were significantly decreased .

追施氮肥对大豆体内氮素运转与分配的影响

Effects of Topdressed N-Fertilizer on Translocation and Distribution in Soybean Plants

追施氮肥后移，可以明显改善小麦的品质。

Deferring top-dressing time could improve the quality of wheat obviously .

配方施肥，足肥巧施；氮肥追施量对黄瓜产量和品质的影响

Influence of Nitrogenous Fertilizer Quantity on Yield and Quality of Cucumber

小麦灌水定额对追施尿素肥效的影响

Effect of Irrigation Quota for Wheat on Topdressing Urea Efficiency

追施沼液对无籽西瓜产量和品质的影响

Effects of Firedamp Liquid on Yield and Quality of Watermelon Without Seeds

氮肥追施时期与施用方法对小麦产量的影响

Effects of Topdressing Stage and Application Methods of Nitrogen on Wheat Yield

土壤水分与氮素追施比率的关系

The Relationship between Soil Moisture and N top Application Rate

小麦田追施沼肥的应用效果

The Effects of Dressing Biogas Waste Fertilizer in Wheat Fields

孕穗期追施氮肥可增加可育小穗数，能显著增加穗粒数。

Nitrogen dressing in booting stage can increase number of grains per ear .

中后期追施氮肥对小麦籽粒的面粉面筋含量及品质的影响

Influence of late stage application of nitrogen fertilizer upon quality of wheat gluten

有机肥和追施氮肥可以提高籽粒灌浆过程中蔗糖的供应水平。

Nitrogen fertilizer and organic fertilizer could increase the grain sugar supply levels .

追施氮对多花黑麦草再生产量和品质的影响

Effects of Additional Nitrogen on Regrowth Yields and Feeding Qualities of Italian Ryegrass