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Fertilize more or use root system of great fat easy harm, tall lukewarm seasonal and unfavorable fertilization, serious person can cause arboreous death.

施肥或施浓肥易伤害根系,高温季节不宜施肥,严重者能造成树木死亡。

This study applied the response surface design to investigate the response of nitrogen, phosphorus and potassium on the growth of naturally regenerated chamaecyparis stand in Chi-lan-shan, and to investigate the response of thinning, pruning and fertilizing on the growth of Calocedrus formosana stand in Forest Station of National ILan University.

本研究以反应曲面试验设计,於栖兰山桧木天然更新林地进行氮、磷、钾施肥试验,另於国立宜兰大学实验林场台湾肖楠人工林进行疏伐、修枝、施肥试验。

Based on a long -term located field e xperiment,risk of different fertilization models in rice field on water environment pollution in a sloped red soil was ass essed by using ceramic tubiformsoil solution collectors.

利用长期施肥模式定位试验,采用陶土管土壤溶液采集装置,研究了南方红壤丘陵区稻田不同施肥模式对农业水环境的影响。

The research on effect of variant fertilizer application stage and the interation on the yield and quality of glutenous wheat.

经过不同施肥时期及不同肥料种类的配合对强筋小麦品质和产量的影响试验,试验结果表明:施同等量的肥料,施肥时期不同对小麦产量和品质有直接关系,以拔节期追施N、P、K肥产量最高,7708.5kg/hm2。

Fertilizer treatment can elongate stem length, internod length, petiole length and increase leaf area and leaf numbers of Humulus Scandens. Fertilizer treatments also improve the total biomass and modular biomass accumulation.

施肥处理有助于葎草攀援植株主茎长度、节间长度、叶柄长度以及叶面积和叶数的增加;施肥也能促进植株总生物量的和各构件生物量的积累。

This paper reviewed the research on dynamic and balance of soil nutrient pool under long-term fertilization conditions,mainly about some active aspects which included dynamic variations of total nitrogen,available N,total phosphorus,available P,total potassium,available K,and organic carbon in soil; dynamic variations of ammonium N,amino acid N,amino sugar N,unknown N,non hydrolyzable N and microbiomass N in soil nutrient pool; changes of Ca2-P,Ca8-P,Al-P,Fe-P,O-P,labile organic P,moderately labile organic P,moderately stable P,highly stable P and microbiomass P in soil; changes of loosely,stably and tightly combined humus,humic and fulvic acids in soil carbon pool; effects of long-term fertilization on organic-mineral complex status in soil; nutrients cycling and balance of agricultural soil nutrients pool.

扼要地概述了国内外近年来关于长期施肥条件下土壤养分库的动态与平衡方面的研究成果。主要介绍并讨论了土壤氮、磷、钾养分全量及有效量的动态变化,土壤有机碳含量的动态变化;铵态氮、氨基酸态氮、氨基糖态氮、酸解未知态氮、非水解残渣氮及微生物体氮在土壤氮库中的动态变化;Ca2 P、Ca8 P、Al P、Fe P、闭蓄态磷,活性有机磷、中度活性有机磷、中稳性有机磷、高稳性有机磷及微生物体磷在土壤磷库中的动态变化;土壤碳库中松结态腐殖质、稳结态腐殖质、紧结态腐殖质以及富里酸和胡敏酸的动态变化;长期施肥对土壤有机无机复合状况的影响;农田土壤养分库的养分循环与养分平衡。

At the same time, Chinese cabbage, lettuce and Lactuca sativa L were potted plant and fertilized at 1/4 the amount of the local vegetable fertilizer.

按当地菜农施肥量的1/4量分期施肥,盆栽小白菜、生菜和油麦三种叶菜,并称取各自的经济产量。

Cultivation density experiment included 3 disposals of 20cm×30cm, 30cm×40cm and 40cm×50cm, with 3 repeats for each disposal; fertilization amount experiment included 4 disposals of 0kg, 450kg, 675kg and 900kg, with 3 repeats for each disposal. The results showed that seeds of Ocimum basilicum Linn.

栽培试验进行栽培密度和施肥对比两种试验;栽培密度试验设20cm×30cm,30cm×40cm,40cm×50cm 3种处理,每种处理3个重复;施肥对比试验设每公顷施复合肥0kg、450kg,675kg,900kg,4种处理,每种处理3个重复。

The result showed that there existed spatial variability of soil nutrients. N, P and K had medium variability, which were mainly affected by routine fertilization measures. On the contrary, Organic matter has a smaller spatial variability; Soil nutrient had semi-variance structure, and model best fit included Circular, Pentaspherical and Exponential. There existed medium spatial correlation in N, P, K and OM.

结果表明,土壤养分性质均存在着空间变异性,受常规施肥措施影响较大的碱解氮、速效磷、速效钾变异相对较大;常规施肥有机质投放较少,变异相对较小;土壤养分性质均存在半方差结构,分别拟合Circular、Pentaspherical、Exponential模型,碱解氮、速效磷、速效钾和有机质均显示中等的空间相关性。

Our results showed that fertilization tended to promote growth of Poa crymophila only in the absence of clipping.

结果表明:不刈割情况下,施肥显著促进冷地早熟禾的生长,而在刈割情况下,施肥对植物的生长没有明显的促进作用甚至有负作用。

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