农机化研究
農機化研究
농궤화연구
JOURNAL OF AGRICULTURAL MECHANIZATION RESEARCH
2015年
5期
200-203
,共4页
张兵%韩霞%庄斌%吴春雨
張兵%韓霞%莊斌%吳春雨
장병%한하%장빈%오춘우
介电特性%作物需水量%叶片电容%含水率
介電特性%作物需水量%葉片電容%含水率
개전특성%작물수수량%협편전용%함수솔
dielectric characteristic%crop water requirement%leaf capacitance%moisture content
为了能对玉米水分亏缺进行准确的判断,进而做出适时适量的灌溉,对玉米电特性与叶片含水率进行了深入的研究。通过叶片非离体和离体实验数据采集及数据分析处理,得到在100Hz、1kHz、10kHz3种不同频率下,非离体与离体玉米叶片电容都随着时间推移逐渐变小,非离体玉米叶片电容的变化曲线相对离体玉米叶片的变化曲线更加平缓,且100 Hz频率下玉米叶片电容值的变化幅度最大。离体玉米在夜间电容值没有延续之前趋势一直下降,甚至有了提高,这与晚间叶片停止光合作用,叶片会适当吸收空气中的水分有关。通过对叶片电容与含水量实验数据的拟合,拟合检验值R2为0.96327,可以得到叶片含水量与叶片电容呈线性关系。
為瞭能對玉米水分虧缺進行準確的判斷,進而做齣適時適量的灌溉,對玉米電特性與葉片含水率進行瞭深入的研究。通過葉片非離體和離體實驗數據採集及數據分析處理,得到在100Hz、1kHz、10kHz3種不同頻率下,非離體與離體玉米葉片電容都隨著時間推移逐漸變小,非離體玉米葉片電容的變化麯線相對離體玉米葉片的變化麯線更加平緩,且100 Hz頻率下玉米葉片電容值的變化幅度最大。離體玉米在夜間電容值沒有延續之前趨勢一直下降,甚至有瞭提高,這與晚間葉片停止光閤作用,葉片會適噹吸收空氣中的水分有關。通過對葉片電容與含水量實驗數據的擬閤,擬閤檢驗值R2為0.96327,可以得到葉片含水量與葉片電容呈線性關繫。
위료능대옥미수분우결진행준학적판단,진이주출괄시괄량적관개,대옥미전특성여협편함수솔진행료심입적연구。통과협편비리체화리체실험수거채집급수거분석처리,득도재100Hz、1kHz、10kHz3충불동빈솔하,비리체여리체옥미협편전용도수착시간추이축점변소,비리체옥미협편전용적변화곡선상대리체옥미협편적변화곡선경가평완,차100 Hz빈솔하옥미협편전용치적변화폭도최대。리체옥미재야간전용치몰유연속지전추세일직하강,심지유료제고,저여만간협편정지광합작용,협편회괄당흡수공기중적수분유관。통과대협편전용여함수량실험수거적의합,의합검험치R2위0.96327,가이득도협편함수량여협편전용정선성관계。
In order to make accurate judgment on the corn moisture deficit , make appropriate and timely irrigation .This paper studied the corn electrical characteristics and leaf water content , through data acquisition and data processing of the leaves in vivo and in vitro .In the 100HZ,, 1kHZ and 10kHZ three kinds of different frequencies , in vivo and in vitro leaf capacitance with the passage of time gradually become smaller , variation curve in curve body corn leaf capaci-tance relative isolated maize leaf is more gentle ,the range of capacitance of maize leaves under the frequency of 100Hz is greatest .Isolated corn in the night has not according to the trend of the capacitance value been declining , even with the increase , this has something to do with the evening leaf photosynthesis will be stopped and leaf will be appropriate to ab -sorb the moisture in the air .The leaf capacitance and water content of experimental data fitting , fitting test value R2 0 . 96327 , can get the leaf water content and leaf capacitance linearly .