寡照胁迫对温室番茄开花坐果特性的影响

doi:10.3969/j.issn.1673-503X.2022.04.010

Abstract

Abstract:

In this study, the tomato variety "Golden Crown No.5" was used as the test material. From 2015 to 2019, the sun-shading net was used in the solar greenhouse to design different duration days (0 d, 1 d, 3 d, 5 d, 7 d, and 9 d) of less irradiation (PAR≤200 μmol·m^-2 s^-1). Blooming Date (BD), Number of Flowers (NoF), Flower Rate (FR), and Fruit Setting Rate (FSR) of each ear of tomato were measured after flowering. Also, the influence of less irradiation stress on the characteristics of flowering and fruit setting in tomatoes was analyzed, and the simulated model of the influence of less irradiation stress on the characteristics of flowering and fruit setting in tomatoes was established based on the accumulated photo-thermal effectiveness (APTE), which was verified using independent data, and compared with the simulation model constructed by PAR daily integral method (PAR). The results show that the flowering time of six panicles of tomato is delayed to different degrees under less irradiation stress, especially for the second and third panicles directly affected by less irradiation stress. The flowering time of the second panicles of tomato is delayed by about one week compared with CK for 7-9 days. The number of fruit per panicle and fruit setting rate of tomato decreases with the increase of the duration of less irradiation, and the longer the duration of less irradiation, the greater the decrease. The model based on APTE significantly improves the prediction accuracy of tomato flowering and fruit setting characteristics under less irradiation stress. Compared with PAR method, The standard errors (RMSE) of BDC, NoFC, FRC and FSRC regression estimation of the second and third panicles of tomato are reduced by 25.5%, 16.7%, 21.2%, 23.8% and 31.4%, 22.4%, 25.2%, 26.6%, respectively.

Key words: Solar greenhouse, Less irradiation tress, Accumulated photo-thermal effectiveness

CLC Number:

S641.2/S626

Ji-bo ZHANG,Nan LI,Can QIU,Xiao-ping XUE. Effects of less irradiation stress on the characteristics of flowering and fruit-setting of tomato in solar greenhouse[J]. Journal of Meteorology and Environment, 2022, 38(4): 85-92.

Figures/Tables 9

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试验批次	试验时段
试验1	2015年12月5—14日
试验2	2016年12月5—14日
试验3	2017年11月28日至12月7日
试验4	2018年12月1—9日
试验5	2019年12月31日至2020年1月8日

方法		APTE(A)		PAR(P)
指标		拟合方程	R²	拟合方程	R²
	BDC	BDC=1.8815A^0.9145	0.9735	BDC=0.5811P^0.9147	0.9746
第二穗花	NoFC	NoFC=0.4926A + 0.0385	0.9681	NoFC=0.1359P + 0.0414	0.9691
第二穗花	FRC	FRC=5.0975A^1.012	0.9444	FRC=1.3891P^1.0123	0.9454
	FSRC	FSRC=3.176A³-21.733A²+49.241A-23.183	0.9999	FSRC=2.3942P-6.0106	0.8809
	BDC	BDC=1.8693A^0.8727	0.9683	BDC=0.6094P^0.8728	0.9691
第三穗花	NoFC	NoFC=0.2702A^1.1904	0.9940	NoFC=0.0587P^1.1897	0.9936
第三穗花	FRC	FRC=4.5121A+1.4855	0.9670	FRC=1.2451P + 1.5129	0.9679
	FSRC	FSRC=6.5015A-7.0925	0.9489	FSRC=1.7945P-7.0562	0.9501

品质指标		APTE方法		PAR方法
品质指标		RMSE	R	RMSE	R
	BDC	0.35	0.9915	0.47	0.9899
第二穗花	NoFC	0.30	0.9906	0.36	0.9911
第二穗花	FRC	1.97	0.9689	2.50	0.9683
	FSRC	4.14	0.9999	5.43	0.9386
	BDC	0.48	0.9729	0.70	0.9728
第三穗花	NoFC	0.38	0.9616	0.49	0.9622
第三穗花	FRC	2.67	0.9683	3.57	0.9678
	FSRC	5.72	0.9389	7.79	0.9386

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Effects of less irradiation stress on the characteristics of flowering and fruit-setting of tomato in solar greenhouse

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