轻型栽培稻田杂草群落发生特点及其综防技术  

Studies on Occuring Regularity and Comprehensive Control of Weed in the Light-planting rice field

作　　者：张夕林[1] 张谷丰[1] 孙雪梅[1] 张建明[1] 张洪进[1] 

机构地区：[1]江苏省通州市植保站,226300

出　　处：《农药科学与管理》1999年第4期21-25,共5页Pesticide Science and Administration

摘　　要：２ 年调查研究表明，直播稻田杂草发生规律是：发生时间长，有２ 个明显的萌发高峰—播后１０～２０ｄ 和２５～３５ｄ；抛秧稻田于抛后５～１５ｄ 出现杂草萌发高峰；杂草种类多—其中发生较重的有７ 科１１ 种杂草；发生量大，种群组合复杂—发生总量是移栽稻的５～６ 倍；部分恶性杂草由旱地向稻田蔓延，危害严重。分析其发生重的主要原因是直播稻播种量少，秧田期和本田期干湿交替时间长，封行期推迟，各种条件有利于杂草的萌发为害。根据其发生特点，提出了“药除，水控，后补”的杂草综合治理对策。The occuring regularity of weeds at direct-sowed rice were investigated.It shows that the occuring of weeds has two high growing period after 10～20d and 25～40d at direct-sowed rice field,and it has one growing period after 5-15d at throwing rice-seedling field. There are many kinds of weeds in the field, the main weeds contains 11 kinds of 7 subject. The total weeds are 5～6 times more than that of transfer field, the reason is the direct-sowed rice field keeps a long time of wet field and dry field alternately . So we suggested that a weeding countermea sure in direct-sowed fields contain chemical weeding and water controling.

关 键 词：轻型 栽培稻田 杂草 发生规律 稻田 防除 

分 类 号：S451.21[农业科学—植物保护]