Application techniques of Suchu herbicide for controlling weeds were studied in direct seeded rice fields in the Middle and Lower Reaches of the Yangtze River.

Then studied the planting character of rice bud-sowing, and prospected the foreground of rice bud-sowing mechanization.

Study on yield increasing mechanism of the infiltration irrigation through shallow furrow to the southern direct sowing rice;

Because of no differences with weeds in time and location, direct sowing rice with labor saving, low investment and high yield potential also has some shortages in competition for space, so the harm degree of weeds is increased, such as moleplant seed which is unsusceptible to normal weed killers and becomes a severe weed.

The insects and rice sheath blight, Thanatephorus cucumeris (Prank Donk)occurrence tendency on the direct seeding rice in northern of Zhejiang Province;