poor quality in production

基本解释

Low yielding and poor quality are the common problems in the chestnut production in Hebei.
河北省太行山区板栗生产上存在的问题是产量低、品质差。
For example, imagine that one of the pain points identified in your interviews is poor quality resulting in numerous defects being discovered in production.
例如，想象一个在你的访谈中得到的努力点是缺乏质量，导致在产品中发现大量缺陷。
In recent years, diseases of maize were epidemic frequently, and become one of the major constraints, causing serious yield losses and poor quality in commercial maize production.
近年来，玉米病害发生频繁，已成为影响我国玉米产量和品质的重要因素之一。