Throughout all the developing stages the highest water consuming intensity aPpeared between heading and flowering stages with a intensity of 7.68 mm/d, which was the treatment that was irrigated in heading stage, thus heading stage was considered as the best irrigation time in importance of contribution to soil water Waer deficiency analysis had indicated .
Crop water stress index(CWSI) is widely used in determinating irrigation time but seldom in determi-nating irrigation water amount. The objective of this paper is to investigate the relationship between the CWSI and the soil moisture and the possibility of using it to determinate the irrigation water amount.
基于冠层温度的作物水分胁迫指标CWSI(Crop Water Stress Index)广泛用于指导作物灌水时间,利用自动气象站的观测资料分别计算了不同供水处理条件下冬小麦中午12:00的作物水分胁迫指数,并将作物水分胁迫指数和对应的土壤含水量进行相关分析,以探讨用作物水分胁迫指数确定灌水量的可行性。
But when designing a sprinkler system, the basic parameter to be used, for example evapotranspiration, is got by experiment under surface irrigation condition. For not accounting for sprinkler points, the parameters of irrigation quota on each application irrigation duty and irrigation time used in practice under sprinkler condition are different to some extent with those under surface irrigation.
Besides the laboratory experiments, the field experiments also performed in Hetao region. The field experiments showed that large flow rate can not only reduce much irrigation time, but can also increase irrigation efficiency.
Throughout all the developing stages the highest water consuming intensity aPpeared between heading and flowering stages with a intensity of 7.68 mm/d, which was the treatment that was irrigated in heading stage, thus heading stage was considered as the best irrigation time in importance of contribution to soil water Waer deficiency analysis had indicated .
Crop water stress index(CWSI) is widely used in determinating irrigation time but seldom in determi-nating irrigation water amount. The objective of this paper is to investigate the relationship between the CWSI and the soil moisture and the possibility of using it to determinate the irrigation water amount.
基于冠层温度的作物水分胁迫指标CWSI(Crop Water Stress Index)广泛用于指导作物灌水时间,利用自动气象站的观测资料分别计算了不同供水处理条件下冬小麦中午12:00的作物水分胁迫指数,并将作物水分胁迫指数和对应的土壤含水量进行相关分析,以探讨用作物水分胁迫指数确定灌水量的可行性。
But when designing a sprinkler system, the basic parameter to be used, for example evapotranspiration, is got by experiment under surface irrigation condition. For not accounting for sprinkler points, the parameters of irrigation quota on each application irrigation duty and irrigation time used in practice under sprinkler condition are different to some extent with those under surface irrigation.
Besides the laboratory experiments, the field experiments also performed in Hetao region. The field experiments showed that large flow rate can not only reduce much irrigation time, but can also increase irrigation efficiency.
Because of the relatively short irrigation time, the protocol may be useful in clinical evaluation of the site of urinary candidiasis.
Following a prolonged irrigation time, all of these solutions cause further urothelial damage, but EDTA caused the most, followed by R, S1, S2, Phys or Art, respectively, at 48 and 72?h.
Furrow irrigation can be better managed if the management decision variables (irrigation time and amount; inflow rate and cutoff) can be determined ahead of time.
In the Leptosols, however, the degradability of the organic matter tended to increase with irrigation time.
This study tests the hypothesis that irrigation with glyceryl trinitrate solution, by inducing gastrointestinal smooth muscle relaxation, may accelerate expulsion of stool by passive emptying, thereby reducing irrigation time.
This paper deaIs with the correlationship between the differentiation of the yieIdieg organ and mophoIogy and the effects of cultivating measures on the factors of field of Avena nuda L. ( L94 ) grown in Qinghai highIandIs frigid zone. Accordingly, it points out the optimum time for sowing, fertiIizing and irrigating.
In this article,the author briefly reviewed some physiological indi- cators used in cotton irrigation scheduling.These indicators include:leaf water potential,leaf water content,cell sap concentration and exudation rate,stomatal aperture and resistance to diffusion,cvapotranspiration rate,leaf temperature and its revised indices,such as stress-degreeday (SDD)and crop water stress index(CWSI),and stem diameter contr- action.Methods and implements used to measure the above indicators were also compared.It was...
In this article,the author briefly reviewed some physiological indi- cators used in cotton irrigation scheduling.These indicators include:leaf water potential,leaf water content,cell sap concentration and exudation rate,stomatal aperture and resistance to diffusion,cvapotranspiration rate,leaf temperature and its revised indices,such as stress-degreeday (SDD)and crop water stress index(CWSI),and stem diameter contr- action.Methods and implements used to measure the above indicators were also compared.It was proposed that further research should be di- rected to measure several indicators simultaneously on a large scale with meteorological adjustment,so as to reveal the effects of water stress on cotton growth and choose the best time to irrigate.
In this paper, studied correlate and regression about dispersing of temperature and light of dif-ferental crown cover with Phytophthora Capsici of sweet pepper and stated countermoving. Indication of result: At 14 o'clock index of patient's condition and rate of death are raised along with increased of intensity of illumination among 26000-50500Lux, their correlative coefficent respectively are
灌水时间
irrigation time
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