论文部分内容阅读
使用机动或人力插秧机插秧,往往发生败苗现象,败苗严重时影响产量和推迟成熟期。且插后气温愈高败苗愈严重,连作晚稻败苗程度超过早稻。这是由于使用插秧机插秧发生的伤秧程度大于手插秧所造成的。机插伤秧可概分为伤茎(损伤秧苗基部,包括茎鞘裂伤、勾秧和断秧)和伤叶(叶表皮擦伤)两种。前者约占伤秧的20%,后者接近100%。据我们调查,
Use of mobile or human transplanter transplanting, often the phenomenon of defeat seedlings, seedlings affect the yield when the serious and delay the maturity. And inserted after the higher the temperature Miemiao more serious, even late rice seedlings over early rice. This is due to the use of rice transplanting transplanting seedlings occurred greater than the extent of hand transplanting caused. Machine inserted injury seedlings can be divided into injury stems (damaged base of seedlings, including stem and sheath laceration, hook seedlings and broken seedling) and injury (leaf epidermis abrasion) two. The former account for about 20% of injury seedlings, the latter close to 100%. According to our investigation,