Planting Technology Lists
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Plastic film mulched cotton should be prevented early from strong lodging and premature senescence.
In the process of planting plastic film cotton, many cotton farmers are prone to some technical mistakes, resulting in cotton plant lodging and premature senescence. The former is caused by uncovering the film too late, while the latter is caused by untimely or insufficient topdressing. Therefore, the following measures should be taken in time: timely removal of plastic film. In the early stage, the absorption capacity of plastic film mulched cotton to fertilizer and water is much stronger than that of direct seeding cotton. If plastic film is removed timely and field management is strengthened, plastic film mulched cotton can give full play to its advantages. If the plastic film is uncovered late or not, it is not conducive to the root system of cotton plants. Make most of the roots distributed in the upper layer of the soil.
2019-01-16 -
Causes and Control Countermeasures of premature Senescence of Cotton under drip Irrigation
Since 2002, the 141 regiment has popularized the cotton drip irrigation planting technology in a large area, the per unit yield has been increased year by year, and the economic benefit is remarkable. However, in recent years, there are different degrees of premature senescence in cotton fields, resulting in poor bolting, shelling, stiff tip increase and lower quality. First, the causes of premature senility. In the cotton fields with long continuous cropping years and short cotton planting years, most of the cotton had green branches and green leaves; the old cotton fields with continuous cropping for more than 10 years grew well in the early stage, but once they encountered low temperature and overcast and rain in the middle and later stages, the symptoms of leaf red leaves occurred in a large area.
2019-01-16 -
Discussion on Comprehensive Prevention of Cotton premature Senescence from cultivation
Cotton premature senescence refers to the phenomenon that cotton leaves wither and yellow in advance under suitable climatic conditions. in the field, it shows that the leaves lose green and yellowing between the leaves after the full flowering stage, and the etiolated leaves start from the farthest away from the main stem, from top to bottom, and develop from outside to in. the leaves gradually withered and fell off. Premature senescence has a great impact on the yield and quality of cotton. The earlier it occurs, the greater the impact. Generally, the yield can be reduced by 10% to 40%. The premature senescence of cotton is due to the fact that the fertilizer and water needs for normal growth of cotton during the peak growth period can not be met, resulting in premature senility and early defoliation.
2019-01-16 -
Control cotton diseases, insect pests and weeds at sowing date and seedling stage
This year, due to the influence of abnormal climate, the sowing time of cotton in our province was postponed. Under the condition of continuous low temperature, the growth and development of cotton was delayed, and the harm degree of diseases and insect pests was relatively aggravated. To this end, cotton is facing a more severe situation of pest control this year. From the beginning of sowing, we should firmly implement the key of each prevention and control technology, especially the technical link of drug selection. Now the main disease and pest control techniques at sowing time and seedling stage are introduced to the broad masses of farmers as follows: first, it is necessary to strictly control the chemical treatment of seeds at sowing time before sowing cotton.
2019-01-16 -
Monsanto will launch drought-tolerant transgenic cotton varieties
Monsanto, the world's leading-edge seed company, is developing a drought-tolerant genetically modified cotton variety that could be launched in 2015 and used for commercial cultivation. "We hope to launch a drought-tolerant cotton seed by the middle of the next decade," said JerrySteiner, vice president of Monsanto. But five years later, we can announce whether we can launch drought-tolerant seeds at that time. " Monsanto officials also said the company is currently working on genetically modified seeds that can minimize fertilizer use. Transgenic species
2019-01-16 -
Scientific Irrigation Technology of Cotton
Cotton is a straight root crop, the main root is deeply embedded in the soil, and it is a drought-tolerant crop. The period from budding to boll opening is the key period of water demand. 1. Conventional irrigation: the whole growth period is irrigated 3-4 times, the first irrigation is in the budding stage, that is, in mid-late June, the second irrigation is in the full bloom stage, that is, the middle of July, the third irrigation is in the flower and boll stage, that is, from the end of July to the beginning of August, if the weather is dry or sand leakage can be done again. If there is a lot of rainfall, if there is no drought, it can no longer be watered. The irrigation quota, in addition to 120 square meters of water per mu, will be irrigated every time during the growth period.
2019-01-16 -
Matters needing attention in irrigation technology of cotton field
Cotton should be irrigated for 3 times during the whole growth period, and irrigation should adhere to the principle that the first water is late, the second water is late, and the three water is full. Head water is carried out at noon when the symptoms of water shortage in cotton leaves are obvious, and it is best to wait until 10% of the plants in the cotton field see peaches. Generally speaking, the best water intake period is from late June to early July. The watering of Wangchang field was postponed to 2 hours of boll setting per plant. Strengthen water control to prevent prosperous growth, the amount of water in the irrigation head should be small, and the amount of irrigation water should be 50 muri 60 cubic meters per mu. One water, two water interval 8 murmurs 10 days, two
2019-01-16 -
A New Technique of Tea Short Cutting
At present, the asexual propagation of tea plant mainly adopts the method of short ear cutting with bed surface paved with subsoil. Although this technology can effectively reduce the disease and grass damage in the breeding process, it restricts the breeding and popularization of tea varieties to a great extent because of its large workload and high investment cost. In recent years, we have put forward a simple, reliable, labor-saving and material-saving cuttage technology with no soil through a large area of experiments. The production cost of this technology is only 300 yuan per mu. It not only saves cost compared with the traditional spreading of soil, but also the survival rate of cuttage can reach about 85%.
2019-01-16 -
Winter management of tea trees
The main results are as follows: 1. Spray the whole body of tea tree with 0.4-0.5 Baume stone sulfur mixture to seal the garden. 2. For hole application or furrow rotten cake fertilizer 150kg, or tea special compound fertilizer 100kg, it is required to finish the application of base fertilizer in November. 3. Combined with fertilization, the weeds on the edge of the garden can be removed and the overwintering habitat of pests can be reduced. 4. Good varieties should be selected in the tea garden, such as deep trench, deep application of basic fertilizer, double-row single-plant planting, low hole cultivation, low fixed cutting, and strive to finish planting this winter and next spring.
2019-01-16 -
The pruning method of tea tree
Tea tree pruning is a measure to properly control and regulate the distribution and operation of nutrients in tea trees on the basis of comprehensive management of soil, fertilizer and water in tea garden, according to local natural conditions, tree age and variety growth habits. a measure to make rational use and distribution of nutrients. However, it must be closely coordinated with fertilizer and water management, combined with collecting and retaining leaves, and pay attention to the prevention and control of diseases and insect pests in order to make tea trees recover quickly and grow well after pruning. The first stereotyped pruning of young tea trees, its height and branch thickness, as well as the strength and branching of subsequent branches.
2019-01-16