What to do if wheat grows before winter

As the saying goes: "There is no flourishing wheat." Before the winter wheat seedlings prosper, the growth period can be advanced, nutrient accumulation can be reduced, and the cold resistance can be reduced, which is not conducive to safe wintering. According to the reason of prosperous growth, the winter wheat seedlings can be divided into four types: Seedlings of weak seedlings that are formed too early are long and narrow, and their pods are insufficient. The main stem and a part of the big sorghum are differentiated before entering the two ridges. Such Wang Miao tend to be weak after a prosperous period, and when it encounters low temperatures of -10°C for about 5 hours in the winter, it will cause frost damage. Management measures: timely suppression. Repression can inhibit the growth of the main stem and the big salamander and control leggy. When repressing, it is necessary to pay attention to choosing a sunny day. If there is frost or dew in the morning, do not suppress it to avoid injury. Immediately after repression, we cut off and combine with watering to apply 15 kg of ammonium bicarbonate; if necessary, we spray with 0.2% to 0.3% of Chlormequat solution on the foliar surface, which can also suppress strong growth and resist freezing injury. Seedling seedlings formed due to excessive sowing have crowded growth, poor individual development and few tillers. Management measures: The first time to sparse seedlings, establish a suitable group structure, and promote individual development; combined with watering, supplement the appropriate amount of nitrogen and phosphorus quick-acting fertilizer to make up for excessive consumption of soil nutrients. Fermentation of water with excessive Miao Miao seedlings produced more tillers, leaves are large, and the fields are extremely depressing. Management measures: Deep rooting. When the main stem of the wheat seedling grows 5 leaves, it is 5-7 cm deep between the rows of wheat, cut off some secondary roots, control nutrient absorption, reduce tillering, and cultivate strong seedlings. The emergence of some spring and weak winter varieties of Wang Miao caused by inappropriate selection of varieties will also lead to prolonged winter. Such seedlings are most susceptible to freezing in winter. Management measures: On the basis of early demarcation and repression, pre-winter soil encircling the roots, or cover “moncler head”, to protect the wheat seedlings safe winter.

Polylactic Acid PLA

Polylactic acid (PLA) is a novel biodegradable material made from starch derived from renewable plant resources such as corn. Starch raw materials obtained glucose through saccharification, and then fermentation of glucose and certain strains to produce high purity lactic acid, and then through chemical synthesis method to synthesize polylactic acid of a certain molecular weight. It has good biodegradability and can be completely degraded by microorganisms in nature after use, resulting in carbon dioxide and water, which does not pollute the environment. It is very beneficial to environmental protection and is recognized as an environmentally friendly material. Ordinary plastics are still incinerated, causing a large amount of greenhouse gases into the air, while polylactic acid plastics are buried in the soil to degrade, resulting in carbon dioxide directly into the soil organic matter or absorbed by plants, will not be discharged into the air, will not cause the greenhouse effect.

Polylactic Acid Pla,Pla For Foam,Biodegradable Polylactic Acid Pla,Low Carbon Material Pla

Xingbang High Molecular Materials Co., Ltd. , https://www.chemicaladditive.com