Planting Technology Lists
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Cotton brown spot
The main symptoms are damage to leaves. Cotyledons infected with primary needle size purplish red spots, and then expanded into brown, purple edges, slightly raised round to irregular disease spots, multiple disease spots fused together in the shape of large disease spots, small black spots scattered in the middle, that is, the conidium of the pathogen. The center of the lesion is easy to break, fall off and perforate, and the leaves fall off seriously. The disease spot of the true leaf is round, yellowish brown, and the edge is purplish red. Pathogen Phyl10stictagossypinaEll.etMart. Call cotton small
2019-01-16 -
Storage technology of sweet potato
A, sweet potato storage problems easy to occur sweet potato in storage during the easy occurrence of cold damage, germination and decay. Sweet potato is thermophilic and afraid of cold and humidity. The storage temperature is 10~14℃ and the relative humidity is about 80%. Below 10℃, cold damage easily occurs, and sunken patches appear on the epidermis, resulting in decay. Sweet potato has no physiological dormancy period. If the temperature is high (15~20℃), the relative humidity is above 85%, and the ventilation is not good, it will germinate at any time. Germination consumes internal nutrients and makes it inedible. Sweet potato skin thin,
2019-01-16 -
Questions and answers on fertilization and weeding of cotton covered with plastic film
Recently, Ding Libang, a 75-year-old farmer from Shuqiao Village, Wuluo Town, Yunmeng County, Hubei Province, called me and asked if it was feasible to change the nutrition bowl to transplant seedlings to plastic film mulching cultivation this year. The answer is now given. Q: can plastic film cotton use chicken manure as base fertilizer? Answer: several points must be paid attention to when using chicken manure as base fertilizer: first, chicken manure should be fully mature; second, it should be applied early before mulching; third, the application amount should not be less than 1500 kg per mu; fourth, because chicken manure contains a certain amount of weed seeds.
2019-01-16 -
New Technology of Cotton Field Management
1. Early shovel and trip: the management of cotton field highlights an early word, and the means to promote early development of strong seedlings are early shovel, multiple shovels, increase ground temperature, strong roots and strong seedlings to promote early development. 2. Topdressing: topdressing 10ml 15kg after setting seedlings, 20m 25kg after budding. 3. Fine pruning: cotton pruning is the key to increasing cotton production. Usually hit the top on July 5-10, and hit the top on July 15-20, in line with the principle of unequal branches from time to time. The number of segments of fruit branches according to the requirements of the variety
2019-01-16 -
Field Management of Cotton at Bud stage and Flower and Boll stage
The management of cotton bud stage and flower and boll stage is centered on the regulation of water and fertilizer, with the measures of ploughing, chemical adjustment and pruning, rational use of promotion and control techniques, promotion and control combination, strong and stable growth, high yield shelves, increasing bud bolls, reducing shedding, and realizing the full hanging of three peaches. First, the bud stage of fertilizer and water management requires the stable growth of cotton plants, so steady application and skillful application of fertilizer are required to control the use of nitrogen fertilizer. Cotton fields with medium and high fertility are no longer fertilized. If the soil fertility is poor or the basal fertilizer is insufficient, urine is usually applied every 667 square meters.
2019-01-16 -
Field Management of Cotton Bud stage
First, the growth characteristics of the bud stage cotton bud period refers to the period from budding to flowering. It usually starts from late May to early June and lasts for 25-30 days. About 40 days after cotton emergence, when triangular buds up to 3 mm wide appear on the first fruit node of the first fruit branch on the cotton plant, it is called budding. The emergence of buds marks the period from vegetative growth to vegetative growth and reproductive growth, but the vegetative growth is still dominant, mainly to expand the vegetative body. During this period, the dry matter accumulation of cotton plant increased continuously, and the carbon and nitrogen generation
2019-01-16 -
Key points of Field Management of Cotton at Flower and Boll stage
Cotton flowering and boll stage is the key period of cotton yield formation. in addition to fertilizer and water management, the following points should be done: chemical control of cotton flowering and boll stage can shift more nutrients of vegetative growth to reproductive growth and reduce bud and boll shedding. It is suggested that the cotton fields with strong growth should be sprayed with 2.0-2.5 grams of meth per mu or 25% Zhuangzhuangsu 8-10 ml at the beginning of flowering. In full bloom, according to the growth trend, spray 2.5-3.0 grams of thalidomide per mu, or 2.
2019-01-16 -
Questions and answers on Field Management techniques of Cotton at Flower and Boll stage
1. What is the flowering and boll period? From flowering to opening bolls, generally from early July to early September, there is a saying that "flowers see flowers 48". In fact, it takes 50-70 days in the Yellow River basin in China. When 10% of the cotton plants in the cotton field bloom, it is called the initial flowering stage; when there is 50% flowering, it is called the flowering stage; when the first fruit node of the fourth fruit branch of 50% of the cotton plant blossoms, it is called the full flowering stage. 2. What are the management principles of the flower and boll period? In the early flowering stage, the vegetative growth mainly changes to the reproductive growth stage, and the management should give priority to control and prevention.
2019-01-16 -
Preparation of Pleurotus ostreatus
The production method of Pleurotus ostreatus is basically the same as that of mushroom and straw mushroom. Pure bacteria can be obtained by tissue isolation and spore isolation, and the new area mainly depends on the introduction of mother or original species. The suitable medium for mother seed production of Pleurotus ostreatus is as follows: first, mother medium 1, maltose yeast Agar medium (MYA) soy peptone (peptone) 1 g, yeast 2 g, maltose 20 g, Agar 20 g, add water to 1000 ml. 2. Potato glucose yeast Agar culture
2019-01-16 -
Preparation of Lentinus edodes cultivated in greenhouse
After the bacteria tube was made, it was sterilized in the stove and kept at 100 ℃ for more than 16 hours. Never reduce any of the ingredients in the formula according to the conventional ingredients. Raw materials should be fresh and mildew-free. The vaccination time is in the first ten days of December. Before vaccination, the inoculation room should be sterilized with potassium permanganate 7 g / m3 and formalin 13 ml / m3 for 6 hours; vaccinators must also enter the inoculation room after disinfection and should not be vaccinated in rainy days. After vaccination, the second disinfection should be carried out, and then the doors and windows should be closed for 3 days, and then go up every day after 3 days.
2019-01-16