在小黄瓜刚形成时,给它套上一个长30厘米、直径4厘米的聚乙烯塑料筒,使黄瓜在这件外衣的约束下成长。经试验,套有塑料筒的只有2％～3%的瓜发生弯曲,而不套塑料筒的有25％的瓜发生弯曲,且套筒的瓜农药 Just as the cucumber was formed, it was covered with a polyethylene plastic tube 30 cm long and 4 cm in diameter to grow the cucumber under the constraints of the coat. After testing, set with plastic tube only 2% to 3% of the melon bending occurs, but not set 25% of the plastic tube melon bending, and the sleeve melon pesticide