Cultivating method for cannabis sativa L. for southern plain autumn sowing seed use
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A cultivation method and autumn sowing technology are applied in the field of cultivation of hemp for autumn sowing seeds in the southern plains, which can solve the problems of limited planting area, long growing time, and low yield of hemp seeds, and achieve expansion of planting area, increase of yield, and The effect of improving land utilization
Inactive Publication Date: 2015-05-13
广西壮族自治区农业科学院经济作物研究所
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[0003] At present, hemp is grown in the south, especially in Guangxi, in mountainous areas (Bama, Donglan, Fengshan, Tian'e, Nandan, Lingyun, etc.), with the main purpose of seed use. The sowing time is around March (spring sowing), and the harvesting time From November to December, there are problems such as limited planting area (rocky mountain area), long growing time (8-9 months), low hemp seed yield (35 kg per mu), etc.
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Embodiment 1
[0038] On August 17, 2011, the autumn sowing of hemp was carried out at the Wuming Scientific Research Base in Nanning. Bama hemp was used as the test material. The test site was sandy loam with flat terrain. It was previously used as peanuts and had medium fertility.
[0039] Before sowing, a furrow is opened, the width of the furrow is about 3 meters, and drainage ditches are opened around the field; 2 O 5 :K 2 O=15:15:15) 60kg. The sowing density is 1.0 kg / mu, the sowing depth is 3-4 cm, and the soil is covered with a seedling-raising substrate, and then covered with a layer of shading net, the hemp seedlings emerge, and the shading net is removed. The seedling raising substrate includes peat soil, perlite, and vermiculite with a mass ratio of 2:1:1, and also includes organic matter accounting for 58% of the total weight of the substrate. In the organic matter, the total amount of nitrogen, phosphorus and potassium is the total amount of organic matter. of 2.2%, calcium ...
Embodiment 2
[0045] On September 10, 2013, a base was built in Wumingli, Nanning, for autumn sowing of hemp. Bama hemp was used as the test material. The test site was sandy loam, with flat terrain and convenient irrigation.
[0046] Before sowing, ditch is opened, and drainage ditches are opened around the field; basal fertilizer is applied, 350kg of organic fertilizer per mu, compound fertilizer (N:P 2 O 5 :K 2 O=15:15:15) 50kg. The sowing density is 1.5kg / mu. Before sowing, the seeds are treated with 2% H 2 O 2The water solution was soaked for 10min, and the emergence rate was 18% higher than that of Example 1 (direct sowing without treatment). Drilling, the sowing depth is 3~4cm, and the soil is covered with the seedling substrate, and then covered with a layer of shading net. After 4 days, the hemp seedlings emerge, and the shading net is removed. The seedling raising substrate includes peat soil, perlite, and vermiculite with a mass ratio of 2:1:1, and also includes organic matt...
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Abstract
The invention belongs to the field of planting, and particularly provides a cultivating method for cannabis sativa L. for southern plain autumn sowing seed use. The cultivating method for the cannabis sativa L. for the southern plain autumn sowing seed use comprises the steps that firstly, ditching and soil plowing are conducted after land clearance; secondly, base fertilizer is applied; thirdly, the cannabis sativa L seeds are sowed in line between August and September, seedling cultivating matrixes are used for covering instead of soil and are covered by a sunshade net after the sowing; fourthly, water is complemented in time to maintain the moist of the soil in a seedling stage and vigorous growing periods; fifthly, thinning and final singling of seedlings are conducted in time to keep the cultivation density to be 5000-6000 strains/mu; sixthly, intertillage weeding combined with the final singling of the seedlings is conducted; seventhly, additional fertilizer is applied; eighthly, pest control and prevention are conducted; ninthly, proportion of female strains and male strains is adjusted to be 5-7:1 in early flowering stages of cannabis sativa L. male strains; tenthly, harvest is conducted in time. The cultivating method for the cannabis sativa L. for the southern plain autumn sowing seed use can enlarge cultivating area of the cannabis sativa L., shorten the planting period of the cannabis sativa L. and raise the cannabis sativa L. yield, and is particularly applicable to be popularized in planting in the southern plains.
Description
technical field [0001] The invention belongs to the field of hemp crop cultivation, and specifically provides a cultivation method of hemp for seed sowing in the southern plains in autumn. Background technique [0002] Hemp ( Cannabis sativa L . ) is the Cannabinaceae (Cannabinaceae) cannabis genus ( Cannabis ) annual herbs, dioecious, the fruit of the female plant is called hemp seed. Hemp is planted to harvest bast fiber or hemp seeds. Hemp seeds are rich in linoleic acid and linolenic acid, which have the functions of moisturizing dryness, smoothing intestines, quenching thirst, detoxifying and beautifying, and conducting blood vessels. The hemp industry involves food , medicines, toiletries, textiles, building materials, papermaking, national defense and military industry, biodiesel and fuel, etc., is a low-carbon, ecological and green emerging industry internationally. [0003] At present, the cultivation of hemp in the south, especially in Guangxi, is in the mount...
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