Detailed Explanation of Hemp Seed Planting Methods and Technical Points
Hemp seed is marijuana seed; it is actually the seed of the Cannabis plant in the Moraceae family. It has high medicinal value and can be used for lubricating the intestines and relieving constipation, expelling parasites, postpartum blood retention, blood deficiency with fluid depletion, and vomiting. It can be used to make soup or porridge, or brewed as tea, and can also be used as medicine, with wide applicability. So how do you plant hemp seed? Today let us learn its planting methods together.
1. Site Selection and Land Preparation
Hemp seed likes light and tolerates atmospheric drought but not soil drought, and it does not tolerate waterlogging. Therefore, its requirements for soil selection in the planting site are relatively high. It is usually best to choose land with good soil water storage and fertilizer retention, loose soil texture, a large amount of organic matter in the soil, a relatively low groundwater table, and convenient drainage and irrigation. At the same time, continuous cropping land cannot be used. Deep plowing is carried out in autumn, then irrigation is carried out in winter or spring, while sufficient base fertilizer is spread on at the same time. Generally, at least about 6,000 kg per mu is needed. After spreading the base fertilizer, plow the land again, then rake the ground level, make the beds, and prepare for sowing.
2. Cultivation Techniques
The sowing time is related to the climate of the planting site. Generally, in the Heilongjiang region, sowing is from mid-April to the end of May each year, while in Liaoning, sowing is carried out in early April each year, but in the Shandong region, it can be sown in two seasons: March to April in spring and June in summer. There are three sowing methods: broadcast sowing, drilling, and dibbling. The best sowing method is drilling, generally with a row spacing of about 12 to 13 cm and a plant spacing of about 7 to 8 cm, sowing evenly, then covering with a thin layer of soil to hide the seed, and then waiting for seedlings to emerge.
3. Field Management
Field management is the key to hemp seed planting. Generally, about half a month after emergence, we need to begin thinning and filling in seedlings. Remove seedlings that are too dense or weak, and then when the seedlings grow to about 18 cm, transplanting is needed. During the processes of thinning, filling in seedlings, and transplanting, we must continuously combine this with cultivating and weeding to promote the healthy growth of hemp seed. Watering hemp seed generally cannot be carried out until about a month and a half after emergence, and it should be done together with ammonium sulfate. When hemp seed is about to bloom, we need to topdress with 200 jin each of ammonium sulfate and calcium phosphate. For the later growth of hemp seed, we need to proceed scientifically according to its water and fertilizer needs.
4. Pest and Disease Control
Hemp seed has many pests and diseases, such as white star disease, damping-off, downy mildew, root-knot nematode disease, white root rot, southern blight, hemp flea beetle, hemp longhorn beetle, and so on. Among them, the main disease is white star disease, which mainly harms the leaf surface of hemp seed. First, we need to strengthen field management, then in the early stage of disease onset, remove the diseased leaves, and then spray Bordeaux mixture for control. As for hemp flea beetle and hemp longhorn beetle, carbaryl wettable powder and dichlorvos emulsion can be used respectively for poisoning and killing.
The above is all the content introduced by the editor today about hemp seed planting methods. I hope it is helpful to everyone. If you want to learn more about hemp seed, you can consult the editor.