Planting Technology Lists
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Common Diseases and Control techniques of Cotton
First, Rhizoctonia solani, commonly known as root rot and black root disease, occurs in all cotton areas throughout the country. after the damage of cotton seedlings, yellow-brown disease spots are produced at the base of the stem near the ground, and then become dark brown, and gradually sunken and rot, and in serious cases, the disease becomes thinner, and the diseased seedlings die or wilt. After the cotyledons were damaged, irregular yellowish-brown spots were formed, and then the disease part was broken and fell off into a perforated shape. After the damage in the adult stage, brown spots appeared on the leaves, and then shedding and perforation. Control methods: 1. Rational rotation: with Gramineae crops: rotation 2 ~
2019-01-16 -
Cotton picking has knowledge, careful picking and high returns.
First, timely cotton picking is the last link of cotton production and the key to ensuring high yield and high efficiency. As cotton is an infinite inflorescence crop, it has budding, flowering, boll setting and maturity, so it needs to be harvested many times. Therefore, according to the cotton boll mature in the cracking process to complete the third stage of fiber development, that is, the fiber dehydration period, about 7 days. The water content of cotton boll shell decreased from 80% to 30%, the water content of cotton pulp decreased from 57% to 18%, and the fiber was further dehydrated and matured.
2019-01-16 -
What to pay attention to before cotton harvest
It generally takes 70 days for cotton to be harvested from boll opening to harvest, so it must be harvested many times, and the time for timely flower harvest is generally 7 days after cotton boll cracking. Generally, flower harvesting has the following requirements: 1. Flower harvesting technology: mainly adopts "three clean" and "five points" flower harvesting method. "Sanjing" refers to the net plant, shell and ground when the flowers are harvested. "five points" refers to picking, drying, storing, rolling and selling. When picking cotton, good flowers, stiff petal cotton and ground cotton should be picked, dried and stored separately, and should not be mixed together.
2019-01-16 -
Seed production techniques of Cotton male sterile Lines
The technology of cotton male sterile line seed production uses insect-assisted pollination male sterile line hybrid seed production method, which overcomes the shortcomings of artificial de-pollination hybrid seed production method, which is widely used at present, such as time-consuming and labor-consuming, high intensity of work, complex management of seed production field and high cost of seed production. The labor consumption can be reduced by more than 50%, and the purity of hybrid seeds can be further improved. It is the most ideal way to produce cotton hybrid seeds. The seed production technique of cotton male sterile line is to cultivate recessive low phenol markers.
2019-01-16 -
Leaf Fertilizer spraying Technology of Cotton in different periods
1. Spraying fertilizer on leaves at seedling stage can promote the early development of cotton seedlings, promote the transformation of weak seedlings into strong seedlings, control plant height and prevent overgrowth. Generally choose to spray 1% urea and 1% Mel 2% SSP filtrate mixture 50 Mel 75 kg. 2. Cotton fields with normal growth by spraying fertilizer at bud stage can be sprayed with 500 times solution of potassium dihydrogen phosphate and appropriate amount of zinc fertilizer; the peak of cotton plant growth occurs before flowering, and if the vegetative growth is too fast, it will close ahead of time and increase the shedding of buds and bolls in the middle and lower parts of cotton fields.
2019-01-16 -
Application techniques of different Chemical Control agents in Cotton
Cotton chemical control is the use of chemical control means to shape cotton into an ideal plant type and create a population with high light efficiency, which can make the plant grow healthily, reduce the occurrence of diseases and insect pests, improve cotton yield and improve cotton quality. However, there are many chemical control agents at present, and the correct use technology should be adopted according to different agents in order to achieve better results. First, propranolol. At present, thalidomide is widely used in cotton chemical control, and the effect is ideal. It can reduce the plant height of cotton, reduce the number of fruit branches, promote the transfer of photosynthesis to reproductive growth, and reduce cotton bolls.
2019-01-16 -
Cotton pre-sowing preparation and sowing techniques
Sowing is the basic link to win high quality and high efficiency of cotton. In order to guide the majority of cotton farmers to plant cotton scientifically, the following sowing techniques are put forward. 1. Select excellent cotton varieties and focus on early-maturing varieties. Such as the national trial of "Ji 668" and 99B and other excellent varieties. In order to preserve the seedlings, the germination test must be done before sowing and the suitable sowing amount must be determined. The sowing rate of machine sowing is about 2 kg / mu, and that of manual sowing on demand is about 1.5 kg / mu. 2. Adopting plastic film mulching technology can increase temperature, preserve soil moisture and promote soil moisture.
2019-01-16 -
Cotton pre-sowing preparation
First, soil preparation and fertilization: on the basis of ploughing and freezing in winter, base fertilizer is applied in spring, with 3 cubic meters of commonly effective organic manure and 30 kg of available ternary compound fertilizer per mu, and then ploughed, raked and leveled. After rain, it is necessary to rake again to absorb and preserve soil moisture, and enough moisture to be planted. Second, seed preparation: (1) Variety selection. Disease-resistant and insect-resistant hybrid cotton varieties are selected, such as Yuza 35, Zhongmian 47, Zhongmian 48 and so on. (2) seed selection. Select the seeds with high purity, full grains, maturity and high germination rate. (3) seed drying.
2019-01-16 -
Treatment of several Special cases of Cotton after sowing
1. After the cotton is sown with insufficient moisture, the soil moisture should be checked in time. For the cotton fields with poor soil moisture and the possibility of drying, ditches can be opened at the edge of the seed ditch to irrigate small water; cotton fields without water irrigation conditions can be suppressed to increase soil moisture before the seedlings are unearthed. 2. In case of rain after sowing, the ground is easy to harden and shell when it rains after sowing. After the rain, hoe and loosen the soil should be made in time to break the knot to help the seedlings to be unearthed. If the soil cover is too thick, you should pick the soil to save the seedlings; the seedlings can not stand the strong light of the sun, so pay attention to leaving a small amount of wet soil in the upper part of the seedlings. 3. Incomplete emergence of seedlings
2019-01-16 -
Multiple measures for comprehensive control of cotton diseases with symptoms
Identification of the symptoms of Fusarium wilt and Verticillium wilt of cotton Fusarium wilt can occur in the whole growth and development period of cotton, but it occurs more seriously in the seedling stage, and it will also occur in the adult stage if favorable conditions are encountered. Ralstonia solanacearum type: the leaf suddenly loses water, the leaf droops and wilts, the leaf color is dark green, the leaf becomes soft and thin, the whole plant is green and dry and dies, but the leaf generally does not fall off and the petiole is curved. Yellowing type: it can occur at both seedling stage and adult stage. Most of the yellowing type occurs from the edge of the leaf, the local or whole leaf turns yellow, and finally the leaf dies or falls off, and the petiole
2019-01-16