Moso Bamboo Nursery Chemical Weeding Technology
Bamboo is the most widely distributed species of bamboo in China. It grows fast, is of good quality, and is widely used. It is the largest bamboo species in China's economic value and accounts for about 70% of the country's total area of ​​bamboo forests. 1 Chemical weeding techniques (1) Pre-planting treatment Moso bamboo seedlings are generally based on autumn sowing, that is, when the bamboo seed is mature, with the harvesting and sowing, when weeds appear on the spare seedbed before sowing, we can use paraquat ( Gramoxone), with an effective amount of 30 blood per 667m2, water 50kg, evenly sprayed on the bed for foliar treatment, can effectively control single and dicotyledonous weeds, 7d after spraying, can be nursed. (2) Pre-planting seedlings after sowing are mainly treated with seed sowing, easy management, and after sowing, the seeds are fired to cover the seed, and the seed is not used as the seed, then the 2,4-dbutyl ester is used, and the effective amount is 50d for every 667 m2. Water 50kg, evenly sprayed on the bed for soil treatment, and then covered with grass, 15-20d that is gradually sprouting unearthed. If seedlings are sown and not treated with herbicides, glyphosate or paraquat can be used when the weeds appear on the surface of the bed. The effective amount per 667m2 is 120d, 30 blood, and 50kg water, evenly sprayed. The treatment of the bed surface with foliar treatment has a weeding effect of more than 95%, but it has no effect on the emergence and post-emergence growth. (3) Treatment of bamboo seedlings in the growing period requires appropriate amount of grass to be uncovered after unearthing. Due to weak seedlings, it is best not to use drugs at the initial stage of emergence. About 15 days after emergence, the seedlings are strong and 2,4-D-butyl ester can be used, and the effective amount is 667m2 per day. For 50-100ml, water 50kg, even spray for foliar treatment, can effectively prevent dicotyledonous weeds, can also be used Sutrain, effective amount of water per 667m2 100g 50kg, even spray for foliar treatment, can be effective The control of single and dicotyledonous weeds is safe for bamboo seedlings and has a good weed control effect. 2 Precautions (1) 2,4-D-butyl ester is volatile, easy to produce phytotoxicity to crops, there should be a 50m wide safety barrier, banned in the beekeeping areas. (2) Herbicides with long residual period cannot be used before sowing, otherwise they will have an impact on emergence. (3) Before seedling treatment after sowing, it is necessary to sow the application of the fertilizer after covering the soil. Never apply the soil after applying the pesticide first, otherwise it will have an impact on emergence.