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n application methods
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     So different N application methods should be chosen according to grain end uses in order to achieve good quality and high yield.
     5、结合不同专用型小麦营养品质、加工品质指标以及产量,综合考虑,在本试验中强筋小麦皖麦38以在施氮量16kg/亩,氮运筹3:1:3:3的情况下达到既优质又高产的目的;
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     The differences of ash content among the treatments with different N application methods were not significant at early stage, but became more and more significant after 14th DAA.
     不同的氮肥运筹下,在籽粒的形成期前后差异不大,在花后14天以后差异较大,后期追氮高的处理灰分下降的幅度大于后期追氮低处理。
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     In order to improve crop yields and N use efficiency and to keep N balance in farmland the measurements should be taken, such as improving N application methods especially N deep application to decrease NH_3 volatilization and reducing irrigation amount especially avoiding heavy irrigation at one time to diminish NO_3-N leaching.
     为了提高作物产量,提高肥料利用效率,保持农田氮素平衡,可通过改善施肥方法、提倡肥料深施,以减少氨挥发造成的氮素损失; 降低灌溉量特别避免一次大量灌溉,可减缓因NO_3-N淋失造成的氮素损失。
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     The physiological and yield effects of different N application methods were studied in high yield winter wheat in 1994~1996.The resulte Showed that N application method that N application amount is reduced at early growth stage and increased at jointing stage could restrain the decrease of SOD activity,the accumulation of MDA and the production of O 2, increase the chlorophyll and protein content of flag leaf,retard the aging of leaf and raise the ear weight and grain yield significantly.
     1994~1996年对高产冬小麦前氮后移施肥方式的产量效应和生理变化进行了研究。 结果表明,采用此施肥方式可以减缓旗叶中超氧化物歧化酶(SOD)活性下降和脂质过氧化产物丙二醛(MDA)含量的积累,减少超氧阴离子(O2)的产生,提高旗叶叶绿素和蛋白质含量,延缓叶片衰老,显著增加穗粒重和产量。
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     The influence of N application methods and spraying plant growth regulaters(PGRs)on tillering,plant height and length of basic internodes,and ear development was studied under no lodging condition.
     在非倒伏条件下,研究了不同氮肥运筹和植物生长调节剂(PGR)处理对小麦分蘖,株高及其构成和幼穗发育的影响。
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     The application of .
     Net在网络控制中的应用。
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     application.
     该工艺技术有着广阔的应用前景。
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     application.
     该工艺技术有着广阔的应用前景。
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     Methods:
     对象和方法:
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     The application of X.
     本文论述了将X.
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Field experiments were conductedinChengcheng county andYangling District in the semihumid region susceptible drought respectively ,using wheat as an in- dication plant to study the effects of different fertilization methods(including surface,deep and mixture application)on N fertilizer efficiency.There are some differences in the results in two locations due to soil fertility,soil mosture state and different amounts of Nfertilizer.It ean be seen through the analysis of different N application...

Field experiments were conductedinChengcheng county andYangling District in the semihumid region susceptible drought respectively ,using wheat as an in- dication plant to study the effects of different fertilization methods(including surface,deep and mixture application)on N fertilizer efficiency.There are some differences in the results in two locations due to soil fertility,soil mosture state and different amounts of Nfertilizer.It ean be seen through the analysis of different N application methods in satisfying crop nutrient requirements and soilN─supplysing capacity in two locations that no matter whatever the coses may be, the efficiency of surface application of N fer- tilizwr is less than or similar to those of deep or mixture application, but not higher than the latter two methods. In the case of low soil N─supplying capacity with deficient wa- ter low tate of N fertilizer applied by the mixture method is favourable to root growth and its efficiency is obviously superior to that of deep and mixture application methods in case of high tate of N fertilizer applied. In the case of high soil N─supplying capacity and better soil moisture, wheat seedlings depend less on N fertilizer application. In this case,deep application can reduce ammonia volatilization and may have great movability of N fertilizer to meet plant needs so that the efficiency is high.

分别在半湿易旱地区的澄城、杨陵二地,以冬小麦为供试作物安排了田间和15N试验,研究了表施、深施和混施氮肥对其肥效的影响。由于土壤肥力、水分状况及氮肥用量不同,两地的结果有异。分析各种施氮方法在两地满足作物养分需要和土壤氮挥发的特点,可以看出,无论在何种情况下,表施的氮肥肥效或较深施和混施逊色,或则近似,但均未比后两种施肥效果优越。在土壤供氮能力差,水分条件欠佳的情况下,氮肥用量较低时,混施有利于根系发育,效果显著优于深施;而用量较高时,深施和混施肥效不相上下。在土壤供氮能力较高时,水分条件又较好的情况下,作物幼苗对肥料氮依赖性较少,深施既减少了氮挥发,又有着较大的移动性,肥效明显高于其它两种施肥方法。

The physiological and yield effects of different N application methods were studied in high yield winter wheat in 1994~1996.The resulte Showed that N application method that N application amount is reduced at early growth stage and increased at jointing stage could restrain the decrease of SOD activity,the accumulation of MDA and the production of O 2, increase the chlorophyll and protein content ...

The physiological and yield effects of different N application methods were studied in high yield winter wheat in 1994~1996.The resulte Showed that N application method that N application amount is reduced at early growth stage and increased at jointing stage could restrain the decrease of SOD activity,the accumulation of MDA and the production of O 2, increase the chlorophyll and protein content of flag leaf,retard the aging of leaf and raise the ear weight and grain yield significantly.

1994~1996年对高产冬小麦前氮后移施肥方式的产量效应和生理变化进行了研究。结果表明,采用此施肥方式可以减缓旗叶中超氧化物歧化酶(SOD)活性下降和脂质过氧化产物丙二醛(MDA)含量的积累,减少超氧阴离子(O2)的产生,提高旗叶叶绿素和蛋白质含量,延缓叶片衰老,显著增加穗粒重和产量。

The influence of N application methods and spraying plant growth regulaters(PGRs)on tillering,plant height and length of basic internodes,and ear development was studied under no lodging condition.It was shown that S 3307 increased tillers per plant,but had no obvious effect on ear bearing shoots per plant.The combinational application of GA 3 and S 3307 could increase ears per plant.S 3307 had significant inhibition on plant height,the uppermost leaf size and florets...

The influence of N application methods and spraying plant growth regulaters(PGRs)on tillering,plant height and length of basic internodes,and ear development was studied under no lodging condition.It was shown that S 3307 increased tillers per plant,but had no obvious effect on ear bearing shoots per plant.The combinational application of GA 3 and S 3307 could increase ears per plant.S 3307 had significant inhibition on plant height,the uppermost leaf size and florets per spike and the extent of inhibition was related to N applied methods.Among three N applied methods,6040,in which 60% of total N fertilizer was used at sowing and 40% used at stem elongating,had the most ear bearing shoots per plant,moderate plant height,largest uppermost leaves and greatest florets and grains per spike,suggesting that it is a recommendable N applied method in local wheat production.

在非倒伏条件下,研究了不同氮肥运筹和植物生长调节剂(PGR)处理对小麦分蘖,株高及其构成和幼穗发育的影响。结果表明,S3307虽然增加单株分蘖数,但对单株有效穗数并无明显作用,GA3和S3307混合使用可增加有效穗数;S3307对株高、顶部两叶大小和每穗颖花数均有一定的抑制效应,且抑制程度与氮肥运筹有关。3种氮肥运筹比较,基肥足(60%)和重施拔节肥(40%)的两次施肥法,分蘖成穗率高,有效穗数多,植株高度适中,顶部叶片大,每穗颖花数和结实粒数多。

 
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