Land preparation. The land that has been deep-lying and ridiculed in the autumn should be tamed and suppressed in the spring. For plots that cannot be completed in time for autumn, replenishment should be carried out at 14 cm in early spring. For regions with severe drought and windy conditions, repression and lifting should be conducted before sowing to facilitate emergence. Selection. The first is variety selection, which should be selected through Heilongjiang Province or national certification (including Heilongjiang Province) varieties, and try to choose the varieties with stable production, disease resistance, and good resistance in recent years. The number of new varieties for the first year Not too much. Should choose to pass Heilongjiang Province or the country to approve the promotion of varieties. Followed by the seed quality, such as the use of single-on-demand technology, the seed germination rate should be higher than 95%. Followed by seed treatment, a germination test was conducted 15 days before sowing and the seeding rate was determined based on the seed bud rate. Fertilization. Base fertilizer can be applied organic fertilizer 30 tons / ha; seed fertilizer is generally dominated by phosphate fertilizer, apply 75 kg of ammonium phosphate per hectare, 30 kg of potassium sulfate, you can add urea 20 to 30 kg; should be 7 to 8 leaf small bell mouth During top-dressing, 200-300 kg of urea is applied per hectare, topdressing urea to apply 9 to 10 cm on the plant side and 5 to 10 cm deep. sowing. Sowing time is generally sown in late April to early May. Sowing rate and planting density are 25-30 kg per hectare. The middle and western part of Heilongjiang Province should be sowed according to the soil moisture conditions by sowing water, and make up water once. Immediately after sowing, the live plots should be repressed. The replenishment plots should be promptly suppressed on the second day after sowing. Pre-field management. Before sowing, the herbicide should be sprayed in time according to soil moisture. Check germination before emergence. After the emergence of seedlings, shovels are used to increase temperature. The conditions are deep and loose, and other plants are deep and loose after jointing. Wait for 3 to 4 leaves to be seedlings. Luggage Net,Double-Layer Nylon Organizer Net,Double-Layer Nylon Cargo Net,Double-Layer Nylon Trunk Luggage Net Ningbo Zhihao Car Accessories Co.,Ltd. , https://www.zhihaoautoparts.com