Determination method of drought stress level of greenhouse crops
A technology for facility crops and drought stress, applied in the field of crop detection, to achieve high precision, accurate measurement, and relatively small error effects
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Embodiment 1
[0043] Step 1: Facility crop drought test
[0044] The crops in the seedling stage were transplanted into plastic pots. During the test, 4 water treatments were set. Normal irrigation T1 (70% to 80% of the maximum water holding capacity in the field) was the control group, and mild stress T2 (the maximum water holding capacity in the field 60% to 70% of the maximum field water capacity), moderate stress T3 (50% to 60% of the maximum field water capacity), severe stress T4 (field water capacity <50%), and three pots were set for each treatment.
[0045] The second step: equipment and medicine preparation
[0046] (1) Instruments and equipment
[0047] 10-1000μL, 1000-5000μL DRAGONLAB adjustable pipette gun, Shanghai Wandao Instrument Technology Co., Ltd.;
[0048] UV spectrophotometer, Shimadzu Corporation, Japan;
[0049] WP4-T dew point water potential meter, Beijing Ligaotai Technology Co., Ltd.;
[0050] Digital constant temperature water bath, Guohua Electric Co., Ltd....
Embodiment 2
[0096] According to the method of embodiment 1, utilize cauliflower to carry out drought test, set 4 water treatments, normal irrigation T 1 (70%-80% of the maximum water holding capacity in the field), as a control group, mild stress T 2 (60%-70% of the maximum water holding capacity in the field), moderate stress T 3 (50%-60% of the maximum water holding capacity in the field), severe stress T 4 (Field water capacity 1 was 48.5%, T2 was 32.4%, and T3 29.1%, T 4 was 21.6%. With the increase of the number of days after irrigation, the soil water content decreased slowly. On the third day after irrigation, the soil water content of each treatment tended to be stable and gradually approached. The soil water content of each treatment was: T 1 25.1%, T 2 21.0%, T 3 19.5%, t 4 During the test, the ambient temperature was 23°C / 17°C, the relative air humidity was 72%, and the photosynthetically active radiation was 800μmol·m -2 ·s -1 . Each treatment set up 3 pots to replica...
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