论文部分内容阅读
黑龙江垦区农田杂草有54科,168属,257种,其中分布广泛,为害严重的有30多种。黑龙江垦区农田杂草发生特点是,旱田杂草分4批出苗,有两个出苗高峰期,出苗时间长达2～3个月,给防治带来困难:水田杂草分2批出苗,主要受温度影响。农田杂草防治要采取综合措施,建立轮作、土壤耕作、化学防除相结合的防除体系。提出了小麦、玉米、大豆、水稻、甜菜、油菜、亚麻不同使用时期及不同防除对象可供选用的除草剂及其使用方法。大豆田化学除草应以土壤处理为主,辅之以苗后茎叶处理。尽量采用两种或两种以上除草剂混用或分期配合使用。
There are 54 families, 168 genera and 257 kinds of weeds in the reclamation area of Heilongjiang Province, among which there are over 30 kinds of serious damage. The characteristics of farmland weeds in reclamation area of Heilongjiang province are as follows: the weeds in dry farmland are distributed in 4 batches, with two peak emergence periods, and the emergence time is up to 2 ~ 3 months, which brings difficulties to the prevention and treatment. Temperature effects. Farmland weed control should take comprehensive measures to establish crop rotation, soil cultivation, chemical control combination of prevention and control system. Proposed wheat, corn, soybeans, rice, sugar beet, rapeseed, linen at different times and different targets for the selection of herbicides and their use. Soybean chemical weeding should be based on soil treatment, supplemented by seedling stems and leaves treatment. Try to use two or more than two kinds of herbicides mixed or used in phases.