These changes may mainly be due to production management and fertilizer application.
这些变化主要是由人为生产管理和施肥造成。
The yield of two times of the fertilizer application at bell stage was similar to that of one time.
拔节期和大喇叭口期分两次追施和大喇叭口期一次施入产量相近。
Advances in study of mechanisms of foliar nutrition and foliar fertilizer application were reviewed.
综合评述了植物叶面营养机理以及叶面肥应用的研究进展。
With proper rate of sulphur fertilizer application, the photosynthetic rate of soybean was increased.
适当的施用硫肥能提高大豆光合作用强度。
The peak of ammonia volatilization rate increased with the increase of phosphorus fertilizer application.
随施磷量增加，氨挥发速率峰值增高。
Organic fertilizer application patterns in Fuji apple orchard on Weibei Plateau in 1999-2002 were studied.
于1999- 2002年对渭北旱原红富士苹果园不同水分条件有机肥施用模式进行了研究。
According to the local soil characteristics, the optimal P fertilizer application rate was also calculated.
并结合当地的特点，推荐了当地的适宜磷肥施用量。
The total amount of ammonia volatilization increased with the increase of phosphorus fertilizer application.
氨挥发总量也随施磷量增加而增大。
Phosphorus status in rice plant were studied under water saving irrigation and different fertilizer application systems.
研究了节水灌溉条件下、不同施肥制度水稻植株对磷的吸收状况。
The result showed that straw incorporation and organic fertilizer application could increase yield and save water clearly.
结果表明，秸秆还田与增施有机肥具有明显的节水增产效应。
Experiment showed that fertilizer application could increase not only the yield of maize but also the quantity of Its roots.
本文通过试验证明了栽培玉米增施化学肥料既可以提高粮食单产，又可随着粮食产量的增加而增多玉米根茬的数量。
The results showed that, (1) the sustainable index of soil fertility was affected by different treatments of fertilizer application.
结果表明：（1）不同施肥处理对土壤肥力可持续性指数影响不同；
More potassium fertilizer application in a previous corn soil can notably improve tobacco quality, in-crease out put value and yield.
玉米茬烤烟增施钾肥，显著提高烟草中上等烟比例和产值，但对产量作用不明显。
The experimental results are statistically analyzed, and the methods of fertilizer application for high yield of corn are put forward.
根据试验结果进行统计，提出了高产玉米因上高效施肥技术方法。
Different fertilizer application techniques were conducted in Longyan to determine methods of balancing fertilization in flue-cured tobacco.
为了确定福建省龙岩烟区平衡施肥方法，进行了不同施肥技术试验。
Plant density is an important factor for cultural management, there is a close relationship between plant density and fertilizer application.
植株密度是栽培措施的重要因素，植株密度和施肥间存在密切关系。
The techniques of fertilizer application were improved, reasonable fertilizer usage contributed to crop yield and food quality significantly.
肥料应用水平有了明显提高。合理使用化肥，大大提高了农作物的产量，改善了作物品质。
The relationship between yield and fertilizer application was studied by means of "3414" method under different amounts of N, P and K applied .
采用“3414”试验方法研究了油菜在不同氮、磷、钾肥施用量组合下，油菜产量与施肥的关系，应用回归效应方程寻找最优施肥量组合。
The model of fertilizer application in cotton with high yield, quality and efficiency was made through the scientific experiments for many years.
当前，江西鄱阳湖区推广的棉花高产优质高效施肥方案，是通过多年的科学试验获得的。
The increase of amount of fertilizer application was the main reason for the result of soil nutrient increase from the planting structure changes.
施肥量的提高是种植结构变化导致土壤养分提高的主要原因。
Using wheat cultivar Yannong 24 and Lumai 21 as materials, effect of Formulated fertilizer application on wheat yield was conducted in this report.
以烟农24号和鲁麦21号为材料，研究了氮磷钾配施水平对小麦产量的影响。
The increase in available P due to P fertilizer application and the yearly decrease in available P after pot culture varied greatly with soil types.
施磷肥处理所增加的有效磷比例和盆栽后土壤有效磷量逐年下降幅度因土壤类型不同而差异很大。
Effect of plant density and fertilizer application on plantain yield in two soils from Colombia with different natural fertility is shown (Table 2).
表2说明了在哥伦比亚的两种不同天然肥力土壤上种植密度及肥料用量对大蕉产量的影响。
It has been proved that the film mulching cultivation had better control of underground water pollution caused by fertilizer application in rice field.
水稻覆膜旱作栽培方式能对施肥造成的稻田地下水水质非点源污染起到良好的控制效果。
Effects of fertilizer application on nitrogen utilization efficiency and nitrate content in hybrid Pennisetum was studied in Nanjing, Jiangsu province.
在江苏南京地区，研究了肥料运筹对杂交狼尾草氮素吸收利用效率和植株硝酸盐含量的影响。
The main results were as follows: there was a close relationship between the effect of Mo fertilizer application and N fertilizer levels, and Mo value.
结果表明：小麦施钼效果与施N水平和土壤钼值密切相关，而与土壤有效钼含量相关不显著。
Reseacrch also showed that one of the key measure to get hight yield of rice is to promote root system development though fertilizer application control.
研究还表明：在高温多雨的水田生态系统中，通过人控施肥调节、促进水稻根系发育，是夺取水稻高产措施之一。
Effect and economical benefit of controlled-release nitrogen fertilizer application on late rice in different basic fertility of paddy soils was studied.
探讨了不同肥力水平水稻土与水稻控释氮肥对晚稻的应用效应及经济效益。
The experiment was conducted to find the approaches of realizing high yield of onion by optimizing transplanting time, density and fertilizer application.
通过栽培时间、密度及肥料施用等栽培技术的试验研究，寻找地膜洋葱在当地取得高产的途径。
The relationship between nitrate fertilizer application and cultivated conditions such as soil fertility, preceding crop, plant density and irrigation etc.
本文对马铃薯经济施肥量与土壤、前作、密度、灌溉等栽培条件的关系进行了定量研究。
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