Planting collection: rape direct seeding high-yield cultivation techniques and time collection!

Rape is also known as Brassica napus, cold vegetables, Hu vegetables, sowthistle, bolting mustard, ladybeans, Buddha vegetables. Mainly distributed in Anhui, Henan, Sichuan and other places. Rape is rich in nutrition, in which vitamin C content is very high. The following is the introduction of rape direct seeding high-yield cultivation techniques and time.

High-yield cultivation techniques of rapeseed by Direct seeding

1. Select excellent varieties, such as A35, H019-4 (for reference only).

2. Early sowing and early development: strive to finish sowing before the end of October to ensure stable and high yield of rape.

3. Reasonable close planting: sowing 200 grams per mu, interseedling 2-3 times after emergence, fixing seedlings at 3-leaf stage, generally 15-18 seedlings per square meter. And spray 150 mg / kg paclobutrazol solution to cultivate dwarf seedlings and improve cold resistance.

4. Matching fertilization: the fertilizer requirement per mu is 1 ton of organic fertilizer, 30 kg of urea, 40 kg of calcium superphosphate, 10 kg of potassium chloride and 1 kg of borax. Organic fertilizer, phosphorus, potassium fertilizer and boron fertilizer were mainly applied at basal level, and nitrogen fertilizer was applied by stages, the proportion before and after spring was 7:3. 0.2% borax solution or potassium dihydrogen phosphate was sprayed on the leaves at the seedling stage and the flowering and podding stage, respectively, to improve the seed setting rate. Special attention should be paid to the early application of direct seeding rape bolting fertilizer, so as to promote the stable growth of spring and make up for the lack of early growth; late application will easily lead to excessive growth in the bolting period, which is not conducive to stable yield and high yield.

5. Scientific drainage and irrigation: rape growth is afraid of both drought and waterlogging. In water management, drought can be irrigated and waterlogging can be drained, and the border ditch and the four-week ditch should be kept unobstructed to facilitate drainage and irrigation. Water demand is large during bolting and flowering period, so water supply should be ensured. Attention should be paid to prevent waterlogging in the field at seedling stage and flowering and podding stage.

6. comprehensive control of disease, insect and grass damage: no-tillage direct seeding rape has serious grass damage in the field, so we must do a good job of stubble control before sowing and weeding at seedling stage. 41% Nongda 200 ml plus 40 kg water spray per mu is available 2-3 days before sowing; weeding at seedling stage can be sprayed with 15 ml / mu of 5% fine grass grass plus 40 kg water per mu at 3-4 leaf stage. At seedling stage, attention should be paid to the control of aphids, cabbage insects, leafhoppers and diamondback moth, which can be controlled by dichlorvos, dimethoate and pyrethroid pesticides. Attention should be paid to the control of Sclerotinia sclerotiorum in early flowering stage and full flowering stage. 1000-1500 times sclerotia clean solution 50-60 kg spray was used to control rape sclerotia disease.

7. Timely harvest: about 30 days at the end of the full bloom of rape, about 2% of the pods are yellow, and most of the seeds in the pods can be harvested when they change from green to yellow or red.

High-yield cultivation time of rapeseed

Generally sowing in late March, about 350 grams per mu of seed. Before sowing, water the soil moisture according to the soil moisture, and sow after the water seeps. When sowing, the 1 meter wide border opens 5 ditches with a depth of 1.5 cm and 2 cm, and the seeds are sown evenly in the ditch.