近年来,随着直播稻种植面积不断扩大和栽培技术不断改革,田间草相也随生态条件的不同而发生了变化。水稻前期干、湿栽培,十分有利老草复活和新草的萌发生长。直播稻田杂草危害已成为阻碍直播稻优质高产和大面积推广应用的主要障碍。为了明确直播稻田杂草的生态特点和杂草萌发规 In recent years, with the continuous planting area of ​​direct seeding rice and continuous reforming of cultivation techniques, the variation of field and grass facies also varies with different ecological conditions. Early rice dry and wet cultivation, very beneficial to the revival of old grass and new grass germination and growth. The direct damage of weed in direct-seeded rice fields has become a major obstacle to the promotion and application of direct-seeded rice of good quality, high yield and large area. In order to clarify the ecological characteristics of weeds in direct-seeded rice and weed germination rules