Cultivating method for cannabis sativa L. for southern plain autumn sowing seed use
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
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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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