Chemical fertilizer is hurtless . The problem of the fertilization comes from unreasonable use .
化肥本身是无害的，有害的是对化肥的不合理施用。
Rises to transport the chain potato seeder is one kind of sowing seeds massive potato seed tuber 's seeder . With its simple structure , reliable operation , high efficiency , and hurtless to plants , this machine is widely applicated both in domestic and foreign country .
