微咸水膜下滴灌条件下西葫芦生长模型及参数研究

Research on the Growth Model and Parameters of SummerSquash Under Drip Irrigation with Brackish Water

为量化不同矿化度灌溉水对西葫芦生长动态过程的影响,采用Logistic、Mitscherlich、Gompertz、Korf和Richards模型对西葫芦生长动态过程进行模拟并对模拟效果进行了分析评价,并进一步揭示了灌溉水矿化度对西葫芦物候期参数和生长参数的影响。动态过程模拟的准确程度依次为:Logistic>Gompertz>Richards>Korf>Mitscherlich,说明,西葫芦生长动态过程的定量描述宜采用Logistic模型。不同矿化度灌溉水处理下西葫芦线性生长期起始点和结束点出现的快慢程度均表现为:K5.1>K3.5>K1.7,线性生长期持续时间长度表现为:K1.7>K3.5>K5.1。不同矿化度处理后的西葫芦平均线性生长速率和最大线性生长速率大小均表现为:K3.5>K5.1>K1.7,线性生长量大小表现为:K3.5>K1.7>K5.1。

To quantify the effects of different salinity irrigation water on the growth process of summer squash,the logistic,Mitscherlich,Gompertz,Korf and Richards models are used to simulate the growth process of summer squash,and the model simulation effect is analyzed and evaluated,and the influence of irrigation water salinity on the phenological parameters and growth parameters of summer squash is further revealed.The accuracy of dynamic process simulation is as follows:Logistic>Gompertz>Richards>Korf>Mitscherlich.Logistic model should be adopted in the quantitative description of the growth dynamic process of summer squash.The starting and ending time of linear growth phase of summer squash under different irrigation water salinity treatments are as follows:K5.1>K3.5>K1.7,and the length of linear growth period is as follows:K1.7>K3.5>K5.The average linear growth rate and maximum linear growth rate of zucchini after different salinity treatments are as follows:K3.5>K5.1>K1.7,and the linear growth amount is written as K3.5>K1.7>K5.1.