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施用农药时可采取哪几种防护措施?(1)配药或拌毒种的防护。过去提倡背风操作,但因为胸前形成气旋涡流,农药仍易污染人体。现在改用上风旁侧操作,挥发的农药向下风飘去,便可避免大量吸入农药。(2)棉田喷药的防护。可从田块下风一侧开始,用处于下风的一手握持喷杆,隔行喷药;返回时换手执杆,仍向下风喷洒(图1)。棉花后期株高叶茂而不能隔行施药时,可以退行向左右两侧喷洒,即前进时人站上风,向下风喷;返回时退行向两侧棉株喷药(图2)。如几架药机同时喷洒,应梯形前进,下风者先喷,隔一定距离依次前进,防止交叉污染。为减轻
What kinds of protective measures can be taken when applying pesticides? (1) Protection of pharmaceuticals or mixed poisonous species. In the past to promote the leeward operation, but because of the formation of cyclone vortex chest, pesticides are still easy to pollute the human body. Now switch to the windward side of the operation, volatile pesticides down to the sky, you can avoid a large number of inhaled pesticides. (2) cotton field spraying protection. From the side of the leeward side of the field, hold the boom with the leeward one hand and spray the medicine interlacedly. When returning, switch the stick and still spray it down the wind (Figure 1). Cotton late high leafy plants and can not be applied interlaced, you can back to the left and right sides of the spray, that is, people stand upwind, downwind spray; back to the cotton plant on both sides of the spray (Figure 2). If a few medicines are sprayed at the same time, they should be trapezoid-shaped, and those who are offensive must spray first to avoid cross-contamination at certain intervals. To alleviate