irrigation frequency

  • 释义

    灌溉次数;灌水频率;灌水周期

数据更新时间:2026-08-23 12:36:05
1、

effect of mulched drip irrigation frequency on soil salt regime and cotton growth

棉花膜下滴灌条件下灌水频率对土壤水盐分布和棉花生长的影响

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2、

Results showed that solute application method and irrigation frequency has a great influence on solute transport.

结果表明,溶质施加方式和灌水频率对溶质迁移影响较大.

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3、

effects of irrigation frequency on movement of bromide and nitrate in soil with shallow groundwater table

灌水频率对地下水埋深较浅土壤中溴和硝态氮迁移的影响

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4、

effect of irrigation frequency and amount on seed yield and yield components of russian wildrye

灌水对新麦草种子产量及产量构成的影响

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5、

With increasing of irrigation frequency, pH decreased, organic content and total dissolved solid increased, ion concentration in soil solution changed obviously.

同时,随着灌溉次数的增加,土壤pH值降低,土壤有机质和全盐量增加;土壤溶液中各离子浓度有显著变化。

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6、

and appropriate to reduce the irrigation frequency and amount has little affects on yield, and can increase water use efficiency.

且适当减少小麦灌溉次数和灌水量对产量影响并不大,并能提高水分利用效率。

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7、

Nitrogen application could significantly increase grain yield under low irrigation frequency ( W0 and W1), while neglected effect on yield was observed with high irrigation frequency ( W2 and W3).

在低灌水频次(W0、W1)条件下,施氮具有明显的增产效应;而高灌水频次(W2、W3),施氮的增产效应不显著。

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8、

the primary study on response of growth, yield and dry matter of cucumber under different irrigation frequency in solar greenhouse

灌溉频率对日光温室黄瓜生长发育及干物质积累的响应

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9、

effects of evaporation and irrigation frequency on soil water distribution

蒸发和灌水频率对土壤水分分布影响的研究

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10、

effect of irrigation frequency on plant growth, yield and fruit quality of greenhouse mini watermelon

滴灌频率对温室小西瓜生长势、产量及品质的影响

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11、

study on effects of irrigation frequency on moisture and salt regime and growth of cotton under mulch-film drip irrigation

灌水频率对膜下滴灌土壤水盐分布和棉花生长的影响研究

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12、

pwm waves generated by mcu are controlled by pwm control technology based on the output of soil humidity deviation and change trends. the drip irrigation frequency based on soil moisture is obtained through the changes of pwm duty ratio.

PWM控制根据土壤湿度偏差与变化趋势的输出控制单片机产生PWM波形,通过改变占空比,从而实现依据土壤湿度的滴灌频率。

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