How to grow direct seeding rape in rice field?

Direct seeding of rape in rice field is a relatively new farming technology put forward a few years ago, which can not only reduce labor input, but also increase stable yield and high efficiency. In the past, the reasons for the use of this technique to affect the high yield of rape are as follows: 1. Delay sowing after rice harvest; 2. Uneven emergence of seedlings; 3. Rape seedlings are thin and weak due to improper application of fertilizer. Chemical weeding is not in place and weeds are overgrown. The method of direct seeding of rape in rice field is briefly introduced as follows for reference:

First, prepare before sowing

1. Choose paddy fields with higher topography and lower groundwater level.

two。 Ten days before the rice harvest, the rice was drained and sunburned when the seeds were scattered.

3. The height of the rice pile is controlled below 10 centimeters.

4. After the rice harvest, the ditches were opened and the border surfaces were leveled to keep the "three ditches" unobstructed.

Chemical weeding

Acetochlor was sprayed evenly on the soil surface immediately after rice harvest, and then covered grass was sprayed when rape was 4-5 leaves, and the control effect was good.

Third, sowing seeds

1. Rape sowing before the first ten days of October can safely collect seedlings, and sowing while the paddy field is moist is beneficial to germination and rapid emergence. Therefore, chemical weeding should be carried out immediately after rice harvest, and then the seeds can be sown on the second day.

two。 The varieties with high purity and large number of pods in main inflorescence were selected.

3. When sowing, mix well with dry fine soil and borax, then strip sow or hole sow or sow. Sow the rice immediately after harvest to facilitate the emergence of rape.

4. The suitable sowing rate per mu is 20000250 grams, and the density is about 20,000 plants. However, with the postponement of sowing time, the sowing amount can be increased as appropriate.

IV. Fertilization

Seed fertilizer, seedling fertilizer and wax fertilizer were applied three times, mainly organic fertilizer and phosphorus and potassium fertilizer, and pay attention to the application of boron fertilizer.

V. Field management

1. Check seedlings to fill gaps: rape leaves during the 3-leaf period to cluster seedlings, 5-leaf stage to check seedlings to fill gaps.

two。 Irrigation and drought prevention: in case of autumn drought before and after sowing, horse water should be irrigated in time to resist drought and promote the whole seedling.

3. Spring trench cleaning: Rain Water after the beginning of spring, should timely clear the ditch to drain, to ensure that the "three ditches" smooth, rain living in the field dry.

4. Pest control: generally, the sowing date of direct seeding rape is later than that of transplanting rape, and the pest is not serious. The control of Sclerotinia sclerotiorum at full flowering stage was basically the same as that of transplanting rape.