Effects of Moisture Content and Zeolite Amount on Tomato Growth Characteristics

Tomatoes under different water（W）-zeolite（Z） coupling strategies of alternate drip irrigation under mulch were used as test materials, and the tomato growth dynamic process simulation method based on Logistic model was used to study the effects of W,Z and their coupling effects on tomato phenological parameters（linear growth start point t₁,linear growth end point t₂,linear growth phase LGD） and growth parameters（maximum linear growth rate MGR,average linear growth rate LGR,linear growth amount TLG）,in order to provide reference for tomato planting under the conditied falternative ilm dropper.The results showed that under different W-Z coupling conditions, tomato S-shaped growth process could be divided into gradually increasing stage, linear growing stage and slowly increasing stage, which was in accordance with Logistic model.Plant height at any W,t₁,t₂ and LGD at W₁,TLG at W_0.75,and MGR,LGR,and TLG at W_0.5W₁ increased firstly and then decreased with increasing Z.There were positive responses of t₁,t₂,LGD to W at Z₆Z₉,and plant height, MGR,LGR,TLG to W at any Z,and MGR,LGR to Z at W_0.75.Increasing W at Z₃ and increasing Z at W_0.5W_0.75 would inhibit t₁,t₂ and LGD.Effects of W,Z and their coupling effects on t₁ and TLG,t₂,LGD,MGR and LGR and plant height were shown as follows, W＞W×Z＞Z,W×Z＞W＞Z,W×Z＞Z＞W,and W＞Z＞W×Z.