One, fine land preparation, spaced flat field?

The whole seedling is the basis of water live to achieve high yield. To this end, we must first fine field, "the height difference is not inches, inches of water does not show mud," before sowing. 15 days before sowing?

Tillage, shallow water to attract grass, and then by plowing, the middle of the land leveling field, so that weeds, rice stakes rot. The large area of the field according to the terrain height, build ridge partition into small pieces, and then every 2.5 meters -4 meters in small pieces of the field, according to the "Chuan" or "well" and along the field around the opening of a good drainage ditch, in order to irrigation and drainage, improve the effect of sun field and pharmaceutical weed control. The next day's sowing after making the border.

Two, timely sowing, to determine the appropriate amount of seed?

The timely sowing is a key measure to ensure full seedling and safe flush. Early indica rice should be stabilized at an average temperature of 12-140C, early japonica rice stabilized at 10-120C, you can start to seize the cold tail and warm head, grab the sunny sowing, single-season rice should be sown at the end of May to the first half of June, generally not more than June 20th. Before sowing, we should do a good job of seed treatment and seed soaking and germination, germination to the degree of breaking the chest to show white. The amount of seed sown should be considered according to the germination rate of the seed, seedling rate and planting density. The amount of seed used for early and middle Japonica rice conventional seed is 60 kg-75 kg/ha, middle indica rice conventional seed is 37.5 kg-45 kg/ha, middle indica rice hybrid seed is 15 kg-30 kg/ha, and double-season late Japonica rice conventional seed is 90 kg-105 kg/ha. Collapse of grain after sowing. Hybrid rice indica can be mixed with 30 kg-37 kg/ha of boiled rice grain at the time of sowing due to less sowing.?

Three, weed control?

Weed is the main factor affecting the high yield of direct-directed rice, paddy field weed control on the focus on the following aspects:?

1. old grass more paddy, in the plowing before 10-15 days, drain the field water, choose the sunny warm days, with 10% glyphosate water 750-1125 ml / hectare, add 50 kg of water spray. One week before sowing, turn the field over and press the grass, plow and harrow 2 times to make the old grass rot fully, then plow and harrow the whole field.

2. 1-2 days after sowing, with 40% live green 675-900 g/ha to water 450-600 g/ha evenly sprayed.?

3. After 3 leaf stage, use 50% dichloroquinolinic acid wettable powder 375-450g/ha to get rid of barnyard grass. Drain the field water before application and spray evenly. Keep water for one week after application. When the rice seedlings are more than 4 leaves, broadleaf grass and weeds occur in large quantities, 10% benzylflurane wettable powder 450-600g/ha can be used, and the soil is spread. Water retention for one week after application.

4. Late supplemental treatment. Because of the pre-emergence of improper weeding, mid and late field weeds are still more, can choose to kill barnyard king and other supplemental treatment.

Four, water control seedlings, good gas irrigation?

From sowing to the 3-leaf period requires water control to protect the seedling, not easy irrigation, in order to facilitate the root system deep. 3-leaf period after the establishment of a shallow water layer, to promote tillering. The middle of the timely shelving, seedling strong early shelving, seedling poor late shelving, direct seeding rice shelving time than transplanted rice to be longer, the degree than transplanted rice to be lighter. When the leaf color of the rice seedling fades, the leaf blade can be irrigated, can be used "shallow water, irrigation, old water does not dry, new water does not enter" method. Spike irrigation period should be used intermittent irrigation method; maturity should not be cut off too early, so as not to