葡萄、甜樱桃、桃等果树在山东地区的栽培过程当中,常会遭遇两大难题:一是病虫害高发,二是果实裂果。问题一旦发生,不仅蔓延迅速,而且解决起来相当棘手。像露地栽培的葡萄生产上,果农常采用套袋的方式来对抗病害发生,然而,套袋之后如果遇到降水,也会使葡萄大量裂果,从而又严重影响果实的商品价值。无奈之下,很多果农只好采用“用药压病”的办法,几乎是下一场雨打一次药,整个生育期下来,给葡萄打药的次数竟达到15~20次之多,如此一来,成本提 Grapes, sweet cherries, peaches and other fruit trees in Shandong cultivation process, often encounter two major problems: First, the high incidence of pests and diseases, and the second fruit cracking. Once it happened, not only did it spread rapidly, it was tricky to solve. In open-field grapes production, fruit growers often use bagging to combat the disease. However, if they encounter precipitation after bagging, grapes can also be heavily cracked, which in turn can seriously affect the commodity value of the fruit. In desperation, many farmers had to use “medication pressure disease ” approach, almost the next rain to fight a drug, the entire growth period down to the number of grape fight actually reached 15 to 20 times as much, so , Cost mention