Cotton Field Management in July At the beginning of the flowering period, by the end of July, 90% of the vegetative organs and genital organs of the cotton plants had grown; the cotton root net was also established in July, forming a mineral Points and moisture absorption peak. Entering the sky in mid-July is the fastest and largest month for cotton. From the above perspectives, the cotton management belt in July There is a decisive nature. (a) Digging earth. It is good for watering and drainage. It can prevent drought and prevent flooding. It is also conducive to ventilation in the lower part of the cotton field, reducing humidity and increasing day and night. The temperature difference is conducive to the improvement of the microclimate in the cotton field, which has an effect on the prevention of rotten bells and lodging, and the promotion of root protection and root protection. After uncovering the cotton field, combined with cultivator loose soil, conditional All of them need to be digging earth, mainly based on machinery and animal power, and artificially assisted. There are cultivator foundations that can be completed at once or in two. Low-lying terrain The block must be clear of the drainage system. (b) Prune topping. The purpose of cotton pruning is to regulate the distribution of nutrients, and secondly, to improve the structure of the group, and finally to make full use of water, fertilizer, light, and gas. Resources, such as heat, to achieve high cotton yields. The use of vegetative shoots (abbreviated as leaf twigs) should not be extreme, either not leaving one or not. In the density Large, no shortage of seedlings in the cotton field, but leaves almost no leaves, but in thin places, lack of seedlings, head and ground, leaving 1-2 strong leaves per plant, can increase the number of bolls per plant; It is not advisable to retain all the leafy branches. To date, fruit branches and leaf buds with very small buds have not yet been resolutely removed at the beginning of July. Branches with stronger leaf branches and fruit branches have been established. It will soon be the heart of the leaves and can no longer be allowed to grow. For example, if there are too many prunes, it will bring premature death, deadlock, rotten peaches, etc. to the cotton plants. All the flowers that have been opened are taken off, so that the cotton plants can save nutrients, and when the conditions are right, there are more bells. 2500-3000 strains per mu in northwestern Yunnan Cotton field, according to the force and density of 13-14 fruit trees per plant stay in time to top, be sure to achieve the top of the peach. Do not be afraid of falling off and greedy And blindly keep fruit branches. Planting varieties with higher boll weights not only requires a higher number of bolls but also a higher boll weight. Do not or less to early peach, late peach, big Greatly improve the uniformity of cotton bolls. (three) to step up control. Many regions in the north have suffered from drought and drought, and many farmers are afraid to control it. Some cotton fields have yet to undergo the first chemical control, most of them There are problems of late control and low doses. Due to the high temperatures in May and June of this year, resulting in different degrees of vegetative growth and weak reproductive growth And the problem of larger shoots and smaller root systems. In the previous section of the cotton field, there was a phenomenon of wilting of cotton plants after a sunny day. After inspection, some were not diseases, Non-fat injury is mainly due to the rapid growth of above-ground parts and large plants, which are caused by large amounts of high-temperature transpiration and weak root water absorption. In the mastery of dildoamine "look The principle of "seeing the situation of the heavens, the land, and the seedlings" should be based on "seeing the seedlings," as long as the cotton seedlings grow at a normal rate, they must be controlled on time. This is called "Active control", if it is controlled after prosperous, is "passive control." According to the current situation of chemical control and the current growth of cotton, it is generally required in July. Chemical control 2-3 times, the first time in the early flowering period, 1-1.5 grams of D-glycidamine; the second time in the flowering period, 1-2 grams per mu, the first time after the topping, the Mu-drug 3- 5g . Due to the large size of the cotton plant, 20-25 kg of water per acre is sprayed during chemical control, and the top and middle fruit shoots are sprayed. (D) timely fertilizer. The problem of cotton fertilization is the most complex issue in cotton management. It is by no means the more fertilized, the higher the yield, and sometimes improper fertilization leads to The opposite result. According to the analysis of the nutrient elements that constitute the cotton plant, 600 kilos of seed cotton per mu does not require too much nutrients, and each nutrient There is a certain proportional relationship between elements. If an element is excessive, it will not only cause waste, but also may affect the absorption and utilization of other elements. Therefore, fertilizer is expensive. Balanced, reasonable, and scientific. On the basis of the application of base fertilizer, before the flowering and belling of cotton, it is generally not necessary to apply topdressing nitrogen fertilizer to avoid excessive nutrition or nutrition. Long over wan; dressing should be in the flowering period (the fourth fruit branch flowering), depending on the fertility and cotton plant growth urea 10-15 kg of urea; base fertilizer is not applied potassium fertilizer, or potash fertilizer to supplement potassium fertilizer. (Zhu Liqing, Service Center, Dangyang Agricultural 110, Hubei Province) Enhanced Starch Noodle Machine Enhanced Starch Noodle Machine,Noodle Maker ,Automatic Noodle Making Machine ,Cereal Noodle Making Machine Shuangfeng County Dingyuan Machinery Manufacturing Co. Ltd.. , https://www.separators.pl
July is the fastest growing month for cotton and the largest amount of growth; it is also a month when the weather is severe, there are many disasters, and serious pests and diseases occur. Most cotton fields in July