【摘要】 本文介绍了组成塑料大棚苗床电热恒温系统的概况,恒温自控原理及特点,同时分析了运行中存在问题,提出了解决办法。为冬季扦插育苗提供了一个简单、实用、安全、可靠的电热恒温系统。更多还原

【Abstract】 This paper discusses the general situation of electrical heating thermostat system for nursery in large plastics shed and principles and characteristics of constant temperature automatic control, analysis all possible problems and gives solutions to them, which provide a simple,practical, safe, and reliable electrical heating thermostat system for cuttage and growth of seedlings in winter更多还原