Planting Technology Lists
-
Three inducing factors of Red Leaf Stem Blight in Cotton
Cotton red leaf stem blight is a physiological disease caused by potassium deficiency, which occurs in the middle and later stages of cotton growth, especially in dry years. The disease of cotton in the field generally begins to show in the bud stage, and the disease is the most serious in the boll opening stage. The symptoms were mainly on the leaves, and the diseased leaves developed from the top to the bottom and from the outside to the inside. The diseased leaves began to lose green from the edge, first yellow, then red spots, and finally the whole leaf turned red, the mesophyll thickened, wrinkled and brittle, and the veins remained green. When the disease is serious, the leaves of the whole plant turn red and brown after losing green, and the leaves scorch and fall off into smooth rods.
2019-01-16 -
Occurrence and Control of Red Leaf Stem Blight in Cotton
Disease symptoms and occurrence regularity: cotton red leaf stem blight is a kind of fulminant disease that often occurs in the middle and later stage of cotton. It can make the leaves turn red from the bottom up until they fall off. The veins remain green, the mesophyll turns red, and the leaves become thicker, brittle, wilted and finally fall off. Cutting the stem without changing color can be distinguished from cotton wilt and Verticillium wilt. Generally in the old cotton area, the cotton fields with continuous planting, sandy land, shallow plough layer or lack of potassium fertilizer are more serious. In the middle and later stage of drought, the serious lack of potassium and zinc in the soil can easily lead to the acceleration of the disease.
2019-01-16 -
The effect of reasonable spraying Brassi Shuofeng 481 on cotton is good.
Shuofeng 481 is a brassinolide product extracted from plant pollen and its derivatives. it comes from plants and acts on plants. It has the functions of promoting cell division and elongation, promoting photosynthesis, delaying senescence, improving stress resistance and so on. It has a variety of effects of auxin, gibberellin and cytokinin. Cotton is a crop with a long growth period, and its growing season goes through the process from low temperature to high temperature to low temperature and from high humidity to drought. Reasonable spraying of Brassi Shuofeng 481 in the whole growth period of cotton can promote the growth and improve the growth of cotton.
2019-01-16 -
Strange phenomenon of cotton: young peaches in the middle and upper parts crack ahead of time
Recently, some farmers called to reflect a strange phenomenon in cotton production: the lower big bolls and early cotton bolls grew normally and did not open bolls, while the tender bolls in the middle and upper parts cracked ahead of time, and some of them rotted bolls after cracking. Wuqiao County Agricultural Bureau immediately organized technicians to go deep into the field to find the reason. First, the field showed that the sowing was too early. In the early cotton fields where there were no buds or few buds in the upper 1 and 3 fruit branches due to Rain Water or diseases and insect pests, the number of cracking of cotton peaches in the middle and upper part was relatively large, that is, the outer bolls of 7 fruit branches and 10 fruit branches were counted from below.
2019-01-16 -
Cotton gets red leaf stem blight when hanging peaches.
The control measures of cotton red leaf stem blight are as follows: 1. Reasonable topdressing, skillful application of cotton top fertilizer, combined application of nitrogen, phosphorus and potassium or foliar topdressing. 2. Strengthen field management, ploughing frequently, improve root respiration conditions, promote root development, prune and branch in time, pick old leaves and control diseases and insect pests. 3. Spray protection with 70% mancozeb or 75% chlorothalonil or 70% methyl topiramate plus foliar fertilizer (potassium dihydrogen phosphate, green source, etc.), 5-
2019-01-16 -
Experiment, demonstration and Application of Industrial soilless Cotton Seedling in Dongtai area
Industrial soilless breeding of cotton is a seedling revolution in the history of cotton planting. It breaks the cultivation system of seedling cultivation and transplanting in nutrition bowl for decades, makes cotton seedling transplanting a simple, rapid, time-saving, labor-saving and cost-saving cultivation method, and opens up a new way for cotton cultivation. Experiment on soilless seedling transplanting introduced into Dongtai city in 2003. In 2004 and 2005, this technology was introduced into Tangyang and skimming port to carry out soilless seedling raising and large-scale transplanting experiment and demonstration.
2019-01-16 -
Cotton mulching cultivation technique and its benefit
In recent years, with the popularization and popularization of transgenic insect-resistant cotton and insect-resistant hybrid cotton and the wide application of plastic film mulching cultivation techniques, cotton developed earlier and bolls per plant were more and earlier. Cotton in continuous cropping cotton field is easy to mature prematurely. Mulching straw in the cotton field covered with plastic film can not only promote the early emergence of seedlings, but also prevent the premature senescence of cotton, so cotton mulching cultivation technology has been paid more and more attention by cotton farmers. At present, the cotton areas in the Yangtze River and Yellow River basins are often covered with 2 rows of root zones, and most of the cotton areas are covered with 4 rows, 6 rows and 8 rows. The way of plastic film mulching is to sow cotton first.
2019-01-16 -
Harm and control methods of cotton aphid
Cotton aphid is the offspring of cotton aphids at seedling stage. After ambush, aphids begin to harm cotton, and its harmfulness is much greater than that of aphids at seedling stage. The oily excretion of aphids is covered with cotton leaves, reducing leaf function, hindering the normal progress of photosynthesis, hindering the transport of nutrients, causing cotton tender leaves to curl, thus causing cotton buds and bolls to fall off. Therefore, the prevention and control of aphids is an important measure to strive for prolificacy and premature production of summer peaches. First, seize the opportunity of control: cotton aphids are usually
2019-01-16 -
The new cotton strain Zhongchang-03 is favored.
One autumn day, although it was drizzling and accompanied by 3Mel 4 northerly wind, it did not stop more than 40 representatives from all over the province from going to Changxinpu Village of Diaodong Cotton original Farm in Hanchuan City to observe and inspect the new cotton strain Chang-03. although the representatives' feet and trouser legs were covered with mud, they saw that the cotton plant was covered with 3040 large and round cotton peaches. The deputies came to the field to count and watch and were busy. One representative had nearly a hundred cotton plants, eager to be uprooted. Jiang Gong, Director of Cotton seed Industry, Cotton Research Institute, Chinese Academy of Agricultural Sciences
2019-01-16 -
New cotton product-Wanmian 16
The variety was selected by Cotton Research Institute of Anhui Academy of Agricultural Sciences and has been examined and approved by Anhui crop Variety approval Committee. 1. Yield level: participated in the variety comparison test of our institute in 1996, the lint yield per mu was 96.7 kg, which was 26.10% higher than that of Simian 3, and 98.93 kg per mu in 1997, 18.36% higher than that of Simian 3. F1 participated in the cotton regional trial in Anhui Province in 1998, and the average seed cotton yield per mu was 234.35 kg per mu in 7 pilot areas.
2019-01-16