Abstract: [Objective] The project aims to conduct experiments for researching the effect of water stress on the parasitic relationship of Egypt broomrape and processing tomato and the control effect of soil moisture on the Egypt broomrape.[Method]After the PEG6000 was used to set different penetration (0 MPa,-0.2 MPa,-0.26 MPa,-0.3 MPa,-0.5 MPa,-0.6 MPa,-0.7 MPa,-0.9 MPa,-1.1 MPa) methods to simulate water stress environment, cultivate seeds and seedlings, the germination rate of processing tomato and Egypt broomrape seeds and their parasitic rate were determined.[Result]Egypt broomrape could germinate under-1.1 MPa press, and processing tomato had no ability to germinate under-0.5 MPa press.In the parasitic process, processing tomato seedlings could endure drought stress of-0.7 MPa, but would die under-0.9 MPa condition.Meanwhile, we had found Egypt broomrape still had the germinating and parasitic ability.[Conclusion]In processing tomato production,there is no significant relationship between soil water content and the growth of Egypt broomrape.simple use of control field irrigation or using drought stress to control Egypt broomrape breeding is not good methods.

摘要： [目的]研究水分胁迫对瓜列当、加工番茄寄生关系的影响和控制土壤水分含量对瓜列当的防除效果.[方法]采用PEG6000设置不同渗透式(0、-0.2、-0.26、-0.3、-0.5、-0.6、-0.7、-0.9和-1.1 MPa)的方法模拟水分胁迫环境,培养种子和寄生苗后测定加工番茄和瓜列当种子的发芽率及寄生率.[结果]瓜列当可在-1.1 MPa下发芽,而加工番茄在-0.5 MPa下就已无发芽的能力.在寄生过程中,加工番茄幼苗耐旱程度到-0.7 MPa、-0.8MPa下失水死亡,瓜列当在-1.1 MPa下仍有发芽、寄生能力.[结论]在加工番茄生产中,土壤含水量多少与瓜列当滋生并无显著的关系,单纯利用控制田间灌水量或干旱胁迫来防治瓜列当滋生的效果并不理想.