How to plant a good summer valley

The use of early-maturing and high-yield varieties of summer grain should be selected from early maturing varieties with good yield and strong resistance, such as Xiagu dwarfs, etc., which are short (about 75 cm), stem diameter, lodging resistance, leaf blade punching, and strong disease ....

Hitachi began manufacturing RT-flex machines

Recently, Wärtsilä authorized Hitachi Shipbuilding Co., Ltd. to build an RT-flex electronically controlled common rail marine engine. At this point, Hitachi became the eleventh company in the world to produce Wärtsilä RT-flex machines. It is reported that Hitachi will produce 6RT-flex50 ....